Error code troubleshooting index

The same number can have different meanings in different products. Match the product and full error message before applying a procedure.

0x204

Remote Desktop is not listening on TCP port 3389

Remote Desktop — Remote Desktop is not listening on TCP port 3389. Remote Desktop may be disabled, TermService stopped, built-in inbound rules disabled, or an upstream network may block traffic. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

0x80070002

Windows Sandbox is missing or cannot start

Windows Sandbox — Windows Sandbox is missing or cannot start. The PC may run Home edition, have virtualization disabled, lack memory or disk space, or have Containers-DisposableClientVM disabled. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

0x80070005

Camera video is missing or access is denied in Windows 11

Windows 11 Camera — For camera problems, check the shutter, Windows permissions, desktop app permissions, and whether the device is enabled, then use the built-in Camera app for a baseline test.

0x8007000E

Fix Windows Update and Save Errors Caused by Low Disk Space

Windows — Check the cleanup candidates, save the necessary files, and then delete them.

0x80070020

Troubleshoot Windows Update Error Codes Safely

Windows — Record the code and check in the order of troubleshooting, restart, capacity/communication.

0x80070035

An SMB share repeatedly asks for credentials or returns access denied

Windows SMB client — An SMB share repeatedly asks for credentials or returns access denied. Saved credentials, an existing SMB session, or a mismatched username format may conflict. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

0x80070043

A mapped network drive cannot reconnect after sign-in

Windows mapped drives — A mapped network drive cannot reconnect after sign-in. Drive reconnection may run before Wi-Fi or VPN is ready, saved credentials may be stale, or the share name may have changed. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

0x80070070

Fix Windows Update and Save Errors Caused by Low Disk Space

Windows — Check the cleanup candidates, save the necessary files, and then delete them.

0x8007007F

Windows upgrade error 0x8007007F: scope and next steps

Windows — Windows upgrade stopped with 0x8007007F? Check the upgrade method, distinguish the resolved 2025 incident, and collect SetupDiag results if a retry fails.

0x8007016a

Fix OneDrive error 0x8007016a

Microsoft OneDrive — Investigate OneDrive 0x8007016a through original preservation, updates, sign-in, Files On-Demand, and post-reset sync. Avoid overlapping moves or deletion and record account-specific state.

0x80070194

Reset the app when OneDrive synchronization stops

Microsoft OneDrive for Windows — Rebuild OneDrive settings and sync connections without deleting cloud files. Folder selections for selective sync must be configured again.

0x8007019e

Restore the WSL optional component when error 0x8007019e appears

Windows Subsystem for Linux — Restore the WSL optional component when error 0x8007019e appears. The Windows Subsystem for Linux feature may be disabled, or Windows may still need the restart requested after enabling it. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

0x80070422

Troubleshoot Windows Update Error Codes Safely

Windows — Record the code and check in the order of troubleshooting, restart, capacity/communication.

0x800705b4

Troubleshoot Windows Update Error Codes Safely

Windows — Record the code and check in the order of troubleshooting, restart, capacity/communication.

0x80072F8F

The Windows 11 clock or time zone is wrong and cannot synchronize

Windows 11 Date and Time — For an incorrect clock, check the time zone as well as the current time, use automatic settings and Sync now, and check whether the settings persist after restarting.

0x80073712

Troubleshoot Windows Update Error Codes Safely

Windows — Record the code and check in the order of troubleshooting, restart, capacity/communication.

Repair Corrupted Windows System Files with DISM and SFC

Windows — Complete DISM at an administrator command prompt and then run SFC.

0x80090016

Windows Hello PIN is unavailable or must be reset

Windows Hello — Windows Hello PIN is unavailable or must be reset. TPM state, account authentication, organization policy, or the PIN container may be inconsistent. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

0x800F081F

Troubleshoot Windows Update Error Codes Safely

Windows — Record the code and check in the order of troubleshooting, restart, capacity/communication.

Repair Corrupted Windows System Files with DISM and SFC

Windows — Complete DISM at an administrator command prompt and then run SFC.

Enabling .NET Framework 3.5 fails with 0x800F081F

Windows 11 / .NET Framework 3.5 — For 0x800F081F, check that the .NET 3.5 source matches the Windows version. On 26H1 and later, use the dedicated installer instead of Windows Features.

0x800f081f

Adding a Windows optional feature fails because source files are missing

Windows optional features / DISM — Adding a Windows optional feature fails because source files are missing. The component store may lack the payload and cannot reach Windows Update, WSUS, or the specified repair source. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

0x800f0922

Fix Windows Update and Save Errors Caused by Low Disk Space

Windows — Check the cleanup candidates, save the necessary files, and then delete them.

0x80370102

WSL 2 error 0x80370102 prevents a distribution from starting

WSL 2 — WSL 2 error 0x80370102 prevents a distribution from starting. CPU virtualization in UEFI/BIOS, Virtual Machine Platform, or nested virtualization may be disabled. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

WSL 2 or Hyper-V cannot run inside a Hyper-V virtual machine

Hyper-V nested virtualization — WSL 2 or Hyper-V cannot run inside a Hyper-V virtual machine. The host may not expose CPU virtualization extensions to the guest, or the setting may be attempted while the VM is running. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

0xA00F4244

Camera video is missing or access is denied in Windows 11

Windows 11 Camera — For camera problems, check the shutter, Windows permissions, desktop app permissions, and whether the device is enabled, then use the built-in Camera app for a baseline test.

0xA00F4292

Camera video is missing or access is denied in Windows 11

Windows 11 Camera — For camera problems, check the shutter, Windows permissions, desktop app permissions, and whether the device is enabled, then use the built-in Camera app for a baseline test.

0xC004C003

Distinguish Windows 11 activation errors 0xC004F074 and 0xC004C003

Windows 11 Activation — For 0xC004F074, focus on organizational activation and edition matching; for 0xC004C003, focus on key validity. Contact official support appropriate to the purchase channel.

0xC004F074

Distinguish Windows 11 activation errors 0xC004F074 and 0xC004C003

Windows 11 Activation — For 0xC004F074, focus on organizational activation and edition matching; for 0xC004C003, focus on key validity. Contact official support appropriate to the purchase channel.

0xc0000005

Outlook 2024/2021 LTSC crashes when opening email from Viva Engage and similar services

Classic Outlook for Windows — Update the affected LTSC product to Microsoft's fixed build or later, then confirm that opening the affected message no longer crashes Outlook.

1.0.2.372

Windows 11 24H2 Stops or Crashes on Devices Using sprotect.sys

Windows 11 — For devices with sprotect.sys 1.0.2.372/1.0.3.48903, update the bundled app to the compatible version and do not force the update until the 24H2 safeguard is removed.

1.0.3.48903

Windows 11 24H2 Stops or Crashes on Devices Using sprotect.sys

Windows 11 — For devices with sprotect.sys 1.0.2.372/1.0.3.48903, update the bundled app to the compatible version and do not force the update until the 24H2 safeguard is removed.

10.29.0.5152

Intel SST Driver Causes a Blue Screen During the Windows 11 24H2 Upgrade

Windows 11 — IntcAudioBus.sys 10.29.0.5152/10.30.0.5152 should be updated to 10.29.00.5714/10.30.00.5714 or later from the PC manufacturer or Windows Update.

10.30.0.5152

Intel SST Driver Causes a Blue Screen During the Windows 11 24H2 Upgrade

Windows 11 — IntcAudioBus.sys 10.29.0.5152/10.30.0.5152 should be updated to 10.29.00.5714/10.30.00.5714 or later from the PC manufacturer or Windows Update.

1601

Windows Installer error 1601: service cannot be accessed

Windows Installer — Windows Installer error 1601: service cannot be accessed. Windows Installer may be disabled or damaged, Windows may be in Safe Mode, or installer registration may have a problem. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

1618

Resolve Windows Installer error 1618: another installation is running

Windows Installer — Resolve Windows Installer error 1618: another installation is running. Windows Update, another setup, or a pending-restart msiexec transaction may already be running. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

173

Troubleshoot 173 in AMD Software: Adrenalin Edition

AMD Software: Adrenalin Edition — Record 173, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.

174

Troubleshoot 174 in AMD Software: Adrenalin Edition

AMD Software: Adrenalin Edition — Record 174, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.

175

Troubleshoot 175 in AMD Software: Adrenalin Edition

AMD Software: Adrenalin Edition — Record 175, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.

176

Troubleshoot 176 in AMD Software: Adrenalin Edition

AMD Software: Adrenalin Edition — Record 176, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.

183

Troubleshoot 183 in AMD Software: Adrenalin Edition

AMD Software: Adrenalin Edition — For AMD Installer Error 183, record installed GPUs and driver providers in Device Manager. Check the OEM configuration, then remove only confirmed unnecessary conflicting drivers using the normal uninstall procedure.

193

Troubleshoot 193 in AMD Software: Adrenalin Edition

AMD Software: Adrenalin Edition — For AMD Installer Error 193, remove the failed installer and download a fresh package for the target GPU from AMD. Run the new local copy and check whether the same code returns.

202

Troubleshoot 202 in AMD Software: Adrenalin Edition

AMD Software: Adrenalin Edition — Record 202, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.

205

Troubleshoot 205 in AMD Software: Adrenalin Edition

AMD Software: Adrenalin Edition — Record 205, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.

22621.5624

Microsoft Changjie IME Input Fails After KB5062552

Windows — The Microsoft Changjie input error will be fixed in KB5062663 or later for Windows 11 23H2. Use the previous IME version only until the device can be updated.

22621.5768

PC Reset or Recovery Fails After KB5063875

Windows — If recovery fails after KB5063875 on Windows 11 23H2/22H2, apply KB5066189 or later. For different OS, use the fix for each OS.

22631.5624

Microsoft Changjie IME Input Fails After KB5062552

Windows — The Microsoft Changjie input error will be fixed in KB5062663 or later for Windows 11 23H2. Use the previous IME version only until the device can be updated.

22631.5699

Microsoft Changjie IME Input Fails After KB5062552

Windows — The Microsoft Changjie input error will be fixed in KB5062663 or later for Windows 11 23H2. Use the previous IME version only until the device can be updated.

26100.9168

Teams and the New Outlook Fail to Start on Windows on ARM

Windows 11 — If Teams/New Outlook does not start on an ARM device, update to Auto Super Resolution Package 1.0.19.0 or later from Microsoft Store.

26100.9278

Desktop Background Turns Solid Black After KB5120998

Windows 11 — Microsoft has not published a workaround for the known issue where the background returns to black after KB5120998. Record the target build and background settings and wait for subsequent updates.

48-digit recovery key

Find a BitLocker Recovery Key and Unlock the Drive

Windows — Make a note of the first 8 digits of the key ID and compare it with the 48-digit key saved on another device.

51876952

Intel SST Driver Causes a Blue Screen During the Windows 11 24H2 Upgrade

Windows 11 — IntcAudioBus.sys 10.29.0.5152/10.30.0.5152 should be updated to 10.29.00.5714/10.30.00.5714 or later from the PC manufacturer or Windows Update.

56318982

Windows 11 24H2 Stops or Crashes on Devices Using sprotect.sys

Windows 11 — For devices with sprotect.sys 1.0.2.372/1.0.3.48903, update the bundled app to the compatible version and do not force the update until the 24H2 safeguard is removed.

6259837

Halo: Campaign Evolved instability with GeForce 610.xx

NVIDIA GeForce Driver / Halo: Campaign Evolved — If the game is unstable on an RTX 50 Series GPU, update to Hotfix 610.82 or a later WHQL driver containing the same fix.

9NF8H0H7WMLT

NVIDIA Control Panel is missing or will not open

NVIDIA Control Panel / NVIDIA DCH Display Driver — For DCH, confirm that Control Panel comes through Microsoft Store, then check its requirements and C: save location.

A running instance of Acrobat has caused an error

A running instance of Acrobat has caused an error: fixes

Adobe Acrobat — PDF will not open because of a running Acrobat instance? Close background processes, update or repair Acrobat, and check whether one PDF or the app is affected.

Auto Super Resolution Package 1.0.19.0

Teams and the New Outlook Fail to Start on Windows on ARM

Windows 11 — If Teams/New Outlook does not start on an ARM device, update to Auto Super Resolution Package 1.0.19.0 or later from Microsoft Store.

Aw, Snap!

Isolate Chrome “Aw, Snap! / Out of Memory” errors by testing load and extensions

Google Chrome for computer — Close all but the affected tab to free memory, then narrow the cause through Incognito, extensions, and updates.

Bad credentials

Fix GitHub Desktop Authentication failed or Bad credentials

GitHub Desktop — Classify GitHub Desktop authentication failures from logs, then check browser sign-in, remotes, permissions, and SSH keys. Separate Fetch from Push while retaining local work.

BitLocker

Find a BitLocker Recovery Key and Unlock the Drive

Windows — Make a note of the first 8 digits of the key ID and compare it with the 48-digit key saved on another device.

Black screen

Troubleshoot Black screen in Steam Remote Play

Steam Remote Play — Check local host rendering, then compare display mode, host encoding and client decoding individually. Verify video, audio, input and reconnection.

CPU FAN Error

CPU FAN Error on an ASUS PC: check the CPU_FAN connection and RPM

ASUS Motherboard — Verify cooling before changing a CPU fan warning. Check an air cooler's connection, then adjust low-speed warning conditions only when a healthy RPM reading is available.

CPU Over Temperature Error

CPU Over Temperature Error at startup: check cooling and cooler installation

ASUS Motherboard — A CPU over-temperature warning requires a cooling check. Separate a new build from a previously working system, inspect cooling and airflow, and verify the result after restarting.

Cannot start Microsoft Outlook

outlook.exe /resetnavpane: use it when Outlook will not open

Classic Outlook for Windows — Use outlook.exe /resetnavpane to reset classic Outlook’s navigation pane. Learn where to enter it, what changes, and what to check if Outlook still will not open.

Checking Privileges

Rocket League cannot connect to Epic Online Services or servers

Rocket League — Check service status, time, account sign-in, and the network in that order. Offline training is not proof of an online connection, so verify a feature that actually uses the servers.

Clean installation

Troubleshoot Clean installation in Intel Graphics

Intel Graphics — Record Clean installation, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.

Cloud conflict

Troubleshoot Cloud conflict in Steam Client / Steam Cloud

Steam Client / Steam Cloud — Preserve local candidates from both devices and any obtainable cloud candidate separately. Choose from timestamps and actual progress, then verify content and synchronization.

Code 10

Fix Device Manager Code 10: "This device cannot start"

Windows Device Manager — For Code 10, record any additional failure message and the driver version, then isolate the start failure using Windows Update, the manufacturer's official driver, and redetection.

Code 43

USB devices repeatedly disconnect after idle or sleep

Windows USB power management — USB devices repeatedly disconnect after idle or sleep. USB hub power management, selective suspend, cable or power limitations, or a device driver may be involved. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

Troubleshoot a USB device stopped with Code 43

Windows USB / Device Manager — Code 43 means the device has reported a failure. Isolate hardware factors using the hub, cable, and another PC, then try official drivers and redetection.

DCH

NVIDIA Control Panel is missing or will not open

NVIDIA Control Panel / NVIDIA DCH Display Driver — For DCH, confirm that Control Panel comes through Microsoft Store, then check its requirements and C: save location.

DISM

Repair Corrupted Windows System Files with DISM and SFC

Windows — Complete DISM at an administrator command prompt and then run SFC.

DNS

WSL alone cannot resolve names while a VPN is connected

WSL 2 — WSL alone cannot resolve names while a VPN is connected. VPN NRPT rules, enterprise firewall policy, or an older NAT DNS proxy configuration may conflict with WSL DNS requests. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

DSA install failure

Troubleshoot DSA install failure in Intel Driver & Support Assistant

Intel Driver & Support Assistant — Separate DSA scanning, downloading and individual package setup; match the product and OEM package. Judge recovery from installed version and functions rather than notifications.

Dangerous download blocked

Chrome download blocked? Review the warning and fix the cause

Google Chrome — Download stopped in Chrome? Open Ctrl+J and read the full warning. Separate blocked or suspicious files from connection, storage and sign-in errors before changing security settings.

Degraded

Storage Spaces reports a warning or degraded state

Windows Storage Spaces — Storage Spaces reports a warning or degraded state. A disconnected or failed pool drive, insufficient free capacity, or an unfinished repair job may have removed redundancy. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

Disconnected

Classic Outlook: Fix Offline Send and Receive Problems

Classic Outlook for Windows — Compare the status bar and button of the classic version and judge based on the difference with webmail.

Download blocked

Chrome download blocked? Review the warning and fix the cause

ERR_CONNECTION_RESET

Troubleshoot Chrome ERR_CONNECTION_RESET

Google Chrome — Compare the site, browser, network, and VPN or security layer.

ERR_NAME_NOT_RESOLVED

Troubleshoot Chrome ERR_NAME_NOT_RESOLVED

Google Chrome — Diagnose the name-resolution error in order across URL, site, device, and network.

ERR_TOO_MANY_REDIRECTS

Chrome ERR_TOO_MANY_REDIRECTS: check cookies for the affected site

Google Chrome — For a loop affecting one website, compare the URL and browsing context before clearing that site's saved data. Treat the comparison as a clue, then check normal browsing again.

Error 1603

AMD Software Error 1603: troubleshoot the general installation error

AMD Software: Adrenalin Edition — Narrow the general error down through updates, the full package, DISM/SFC and the existing AMD installation, rather than applying every repair at once.

Error 182

AMD Software Error 182: graphics driver installation stops

AMD Software: Adrenalin Edition — Instead of repeatedly running the newest package based on the model name alone, identify the GPU's Embedded, Legacy or OEM class and switch to a compatible package.

Error 184

AMD Software Error 184: unsupported operating system

AMD Software: Adrenalin Edition — Check winver and System type, finish Windows updates, then select the matching OS package on AMD's product page.

Error 195

AMD Software Error 195: cannot access required web resources

AMD Software Installer / Auto-Detect and Install Tool — Confirm the failure to reach AMD servers, then narrow it down using the current tool, official full package and a later retry.

Error 71

Rocket League cannot connect to Epic Online Services or servers

Error Code: GAME_MISSING

Minecraft GAME_MISSING: checks before reinstalling Bedrock

Minecraft for Windows / Minecraft Launcher — Compare Minecraft for Windows installation, direct startup, updates, and Launcher repair for GAME_MISSING. Check entitlement accounts and world preservation while distinguishing general diagnosis from a code-specific fix.

Event 1000

Outlook 2024/2021 LTSC crashes when opening email from Viva Engage and similar services

Classic Outlook for Windows — Update the affected LTSC product to Microsoft's fixed build or later, then confirm that opening the affected message no longer crashes Outlook.

FAT32

File too large for destination file system: check FAT32 before copying

Windows — When a video or backup will not fit onto an otherwise empty USB drive, compare the individual file size with the destination format. Prefer testing suitable existing storage before changing a format.

Failed to Start Game

Fix Steam's Failed to Start Game (Missing Executable) error

Steam Client — Check security-software quarantine, then verify and download legitimate files from the game's Installed Files page in Steam.

Firefox is already running but is not responding

Fix Firefox “already running” or profile-in-use errors

Mozilla Firefox — Diagnose Firefox already-running errors through remaining processes, profile locks, storage, and permissions. Preserve the original profile, compare a new one, and verify another startup.

GAME_MISSING

Minecraft GAME_MISSING: checks before reinstalling Bedrock

GPU-601

Clean and reinstall the graphics driver with AMD Cleanup Utility

AMD Radeon / AMD Cleanup Utility — Obtain the compatible driver first, run AMD's official utility in Safe Mode with a restore point, and reinstall the driver.

GPU-KB1603

AMD Software Error 1603: troubleshoot the general installation error

AMD Software: Adrenalin Edition — Narrow the general error down through updates, the full package, DISM/SFC and the existing AMD installation, rather than applying every repair at once.

GPU-KB182

AMD Software Error 182: graphics driver installation stops

GPU-KB184

AMD Software Error 184: unsupported operating system

AMD Software: Adrenalin Edition — Check winver and System type, finish Windows updates, then select the matching OS package on AMD's product page.

GPU-KB195

AMD Software Error 195: cannot access required web resources

AMD Software Installer / Auto-Detect and Install Tool — Confirm the failure to reach AMD servers, then narrow it down using the current tool, official full package and a later retry.

Host not found

Troubleshoot Host not found in Steam Remote Play

Steam Remote Play — Check the Anywhere mode, awake host, account and settings; compare a trusted LAN with the usual route. Verify discovery separately from streamed video.

Hyper-V

Hyper-V is missing from Windows Features or cannot be enabled

Hyper-V — Hyper-V is missing from Windows Features or cannot be enabled. The PC may run Home edition, lack a SLAT-capable CPU, have firmware virtualization disabled, or have hypervisor launch disabled in boot configuration. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

ICE Checking

Fix Discord No Route or RTC Connecting voice errors

Discord — Investigate Discord No Route and RTC Connecting through service status, channel scope, VPN, and connection differences. Separate text from voice connectivity and review managed-network requirements.

IS-0005

Troubleshoot IS-0005 in Epic Games Launcher

Epic Games Launcher — Compare Epic-only versus network-wide failure and record official status and stage. Restore permitted route trials and verify completed downloads separately from game launch.

IS-FC02-1392

Verify missing or damaged game files in Epic Games Launcher

Epic Games Launcher — In Epic Library, open the three-dot menu → Manage → Verify. If an external-launcher game has no button, use its native launcher instead.

Indexing Status

Classic Outlook: Fix Missing Search Results

Classic Outlook for Windows — Check the search range, index, target store, and synchronization in the classic version.

Installation failed

NVIDIA App fails to install a graphics driver

NVIDIA App / GeForce Driver — Finish Windows Update, close potentially interfering apps, and use a custom clean installation of the official NVIDIA driver.

IntcAudioBus.sys

Intel SST Driver Causes a Blue Screen During the Windows 11 24H2 Upgrade

Windows 11 — IntcAudioBus.sys 10.29.0.5152/10.30.0.5152 should be updated to 10.29.00.5714/10.30.00.5714 or later from the PC manufacturer or Windows Update.

Invalid file name

OneDrive: Fix Invalid File Names and Long Paths

Microsoft OneDrive / SharePoint — Fix invalid characters and long paths without deleting content, and check syncing and sharing.

KB5062552

Microsoft Changjie IME Input Fails After KB5062552

Windows — The Microsoft Changjie input error will be fixed in KB5062663 or later for Windows 11 23H2. Use the previous IME version only until the device can be updated.

KB5062663

Microsoft Changjie IME Input Fails After KB5062552

Windows — The Microsoft Changjie input error will be fixed in KB5062663 or later for Windows 11 23H2. Use the previous IME version only until the device can be updated.

KB5063875

PC Reset or Recovery Fails After KB5063875

Windows — If recovery fails after KB5063875 on Windows 11 23H2/22H2, apply KB5066189 or later. For different OS, use the fix for each OS.

KB5066189

PC Reset or Recovery Fails After KB5063875

Windows — If recovery fails after KB5063875 on Windows 11 23H2/22H2, apply KB5066189 or later. For different OS, use the fix for each OS.

KB5120998

Desktop Background Turns Solid Black After KB5120998

KB5121003

Teams and the New Outlook Fail to Start on Windows on ARM

Windows 11 — If Teams/New Outlook does not start on an ARM device, update to Auto Super Resolution Package 1.0.19.0 or later from Microsoft Store.

LS-0013

Troubleshoot LS-0013 in Epic Games Launcher

Epic Games Launcher — Check verification, additional launchers, permanent elevation and launcher cache. Compare one recorded change at a time and verify the original launch at normal privilege.

LS-0014

Verify missing or damaged game files in Epic Games Launcher

Epic Games Launcher — In Epic Library, open the three-dot menu → Manage → Verify. If an external-launcher game has no button, use its native launcher instead.

MD-0011-1037

Troubleshoot MD-0011-1037 in Epic Games Launcher

Epic Games Launcher — Identify managed VPN/proxy conditions and compare the same install with one permitted route change. Restore settings and verify normal required access.

MOZILLA_PKIX_ERROR_MITM_DETECTED

Firefox: Troubleshoot SEC_ERROR_UNKNOWN_ISSUER Safely

Mozilla Firefox — Check publisher for single site or multiple sites without adding exceptions.

Manual install

Troubleshoot Manual install in Intel Graphics

Intel Graphics — Record Manual install, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.

Missing Executable

Fix Steam's Failed to Start Game (Missing Executable) error

Steam Client — Check security-software quarantine, then verify and download legitimate files from the game's Installed Files page in Steam.

NET::ERR_CERT_DATE_INVALID

Safely troubleshoot Chrome NET::ERR_CERT_DATE_INVALID

Google Chrome — Do not bypass the certificate warning; determine whether the device clock or site is responsible.

NLA

Remote Desktop NLA rejects credentials

Remote Desktop — Remote Desktop NLA rejects credentials. The destination account may lack permission, saved credentials may be stale, clocks may differ, or the domain/local username format may be wrong. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

NetFx3

Enabling .NET Framework 3.5 fails with 0x800F081F

Windows 11 / .NET Framework 3.5 — For 0x800F081F, check that the .NET 3.5 source matches the Windows version. On 26H1 and later, use the dedicated installer instead of Windows Features.

No Route

Fix Discord No Route or RTC Connecting voice errors

OEM warning

Troubleshoot OEM warning in Intel Driver & Support Assistant / Intel Graphics

Intel Driver & Support Assistant / Intel Graphics — Record OEM warning, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.

Open and Repair

Excel: Recover a Damaged Workbook with Open and Repair

Microsoft Excel for Windows — Retain the original, restore it by repairing it, and then extracting the value/formula.

Out of Memory

Isolate Chrome “Aw, Snap! / Out of Memory” errors by testing load and extensions

Google Chrome for computer — Close all but the affected tab to free memory, then narrow the cause through Incognito, extensions, and updates.

Outlook.exe /resetnavpane

outlook.exe /resetnavpane: use it when Outlook will not open

Classic Outlook for Windows — Use outlook.exe /resetnavpane to reset classic Outlook’s navigation pane. Learn where to enter it, what changes, and what to check if Outlook still will not open.

RTC Connecting

Fix Discord No Route or RTC Connecting voice errors

Repository not found

Fix GitHub Desktop Authentication failed or Bad credentials

GitHub Desktop — Classify GitHub Desktop authentication failures from logs, then check browser sign-in, remotes, permissions, and SSH keys. Separate Fetch from Push while retaining local work.

SEC_ERROR_UNKNOWN_ISSUER

Firefox: Troubleshoot SEC_ERROR_UNKNOWN_ISSUER Safely

Mozilla Firefox — Check publisher for single site or multiple sites without adding exceptions.

SFC

Repair Corrupted Windows System Files with DISM and SFC

Windows — Complete DISM at an administrator command prompt and then run SFC.

SMB

Shared computers do not appear under Network in File Explorer

Windows network discovery — Shared computers do not appear under Network in File Explorer. The network profile may be Public, network discovery may be disabled, or Function Discovery services may be stopped. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

SMTP

Fix Thunderbird when receiving works but sending mail fails

Mozilla Thunderbird — When Thunderbird receives but cannot send, inspect SMTP errors, provider settings, sender association, authentication, and connectivity. Separate sending from saving the sent copy and verify with a small test.

SU-PQR1603

Troubleshoot SU-PQR1603 in Epic Games Launcher

Epic Games Launcher — Record the failed prerequisite and inspect updates, official runtimes and target-folder access. Skipping checks or permanent elevation is not repair evidence; verify normal updating.

Server Not Found

Firefox Server Not Found: compare browsers and check proxy settings

Mozilla Firefox — First determine whether the failure is specific to Firefox, one website or the wider connection. Record the current configuration before correcting an identified proxy mismatch.

Spooler

A print job remains stuck on Deleting

Windows Print Spooler — A print job remains stuck on Deleting. An application or driver may hold a spool file, preventing Print Spooler from processing the queue. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

Startup Repair

Use Startup Repair When Windows Will Not Start

Windows — Run [Startup Repair] from [Advanced options] in WinRE.

Sync error

OneDrive: Fix Invalid File Names and Long Paths

Microsoft OneDrive / SharePoint — Fix invalid characters and long paths without deleting content, and check syncing and sharing.

Unable to sync

Troubleshoot Unable to sync in Steam Client / Steam Cloud

Steam Client / Steam Cloud — Do not bypass the warning. Preserve progress on local and other devices, check Cloud settings and connectivity, then verify synchronization and in-game progress separately.

Unlicensed Product

Office: Fix an “Unlicensed Product” Activation Error

Microsoft 365 / Office for Windows — Check accounts, contracts, duplicate installations, and official diagnostics before purchasing keys.

Virus detected

Chrome download blocked? Review the warning and fix the cause

WSB

Disable networking and clipboard sharing in Windows Sandbox

Windows Sandbox — Disable networking and clipboard sharing in Windows Sandbox. Windows Sandbox enables networking and clipboard sharing by default, creating unnecessary paths between untrusted code and other resources. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

WinRE

Use Startup Repair When Windows Will Not Start

Windows — Run [Startup Repair] from [Advanced options] in WinRE.

Working Offline

Classic Outlook: Fix Offline Send and Receive Problems

Classic Outlook for Windows — Compare the status bar and button of the classic version and judge based on the difference with webmail.

chrome://management

Identify the source of Chrome “Managed by your organization”

Google Chrome — Inspect policy names, values, and Source behind Chrome management labels. Connect them to blocked settings, distinguish platform and cloud management, and verify updates at the management source.

chrome://policy

Identify the source of Chrome “Managed by your organization”

empty token

Fix GitHub Desktop Authentication failed or Bad credentials

GitHub Desktop — Classify GitHub Desktop authentication failures from logs, then check browser sign-in, remotes, permissions, and SSH keys. Separate Fetch from Push while retaining local work.

excel /safe

Excel: Start in Office Safe Mode

Microsoft Excel for Windows — Use Excel safe mode to suppress startup elements and examine the difference from normal.

global-messages-db.sqlite

Rebuild Thunderbird’s global search index when results are blank or slow

Mozilla Thunderbird — When messages open directly but global search fails, preserve the search database and reindex. Compare Activity Manager progress and known-message searches, separately from sync or original-message failures.

parent.lock

Fix Firefox “already running” or profile-in-use errors

powercfg

Hibernate is missing from the power menu

Windows power management — Hibernate is missing from the power menu. Hibernation may be disabled, free space may be insufficient for hiberfil.sys, or firmware/drivers may restrict available sleep states. Record the current state before changing it, use only the supported Windows path described below, and verify the same operation again after any required restart.

sprotect.sys

Windows 11 24H2 Stops or Crashes on Devices Using sprotect.sys

Windows 11 — For devices with sprotect.sys 1.0.2.372/1.0.3.48903, update the bundled app to the compatible version and do not force the update until the 24H2 safeguard is removed.

thunderbird -P

Recover a missing or inaccessible Thunderbird profile

Mozilla Thunderbird — Compare the profile data with Thunderbird's reference and preserve mail and contacts before registration. Distinguish an empty new profile from lost data, inspect offline, then reconnect accounts individually.

winword /safe

Word: Start in Office Safe Mode

Microsoft Word for Windows — Check the difference from normal startup in Office safe mode with only Word.

wsreset.exe

Microsoft Store: Fix App Download and Update Failures

Microsoft Store — Recover by updating, verifying account, resetting cache, and repairing the app.

コード 10

Fix Device Manager Code 10: "This device cannot start"

コード 43

Troubleshoot a USB device stopped with Code 43

Windows USB / Device Manager — Code 43 means the device has reported a failure. Isolate hardware factors using the hub, cable, and another PC, then try official drivers and redetection.