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.
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.
0x8007016a
Fix OneDrive error 0x8007016a
Microsoft OneDrive — Troubleshoot OneDrive error 0x8007016a by following the official decision path while preserving user data.
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.
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
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.
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.
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 — Record 183, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
193
Troubleshoot 193 in AMD Software: Adrenalin Edition
AMD Software: Adrenalin Edition — Record 193, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
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.
A running instance of Acrobat has caused an error
Fix Acrobat “A running instance has caused an error”
Adobe Acrobat — Troubleshoot Acrobat “A running instance has caused an error” by following the official decision path while preserving user data.
Bad credentials
Fix GitHub Desktop Authentication failed or Bad credentials
GitHub Desktop — Troubleshoot GitHub Desktop Authentication failed or Bad credentials by following the official decision path while preserving user data.
Black screen
Troubleshoot Black screen in Steam Remote Play
Steam Remote Play — Record Black screen, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
Cannot start Microsoft Outlook
Fix “Cannot start Microsoft Outlook” with resetnavpane
Classic Outlook for Windows — Troubleshoot “Cannot start Microsoft Outlook” with resetnavpane by following the official decision path while preserving user data.
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 — Record Cloud conflict, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
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.
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 — Record DSA install failure, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
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.
Firefox is already running but is not responding
Fix Firefox “already running” or profile-in-use errors
Mozilla Firefox — Troubleshoot Firefox “already running” or profile-in-use errors by following the official decision path while preserving user data.
Host not found
Troubleshoot Host not found in Steam Remote Play
Steam Remote Play — Record Host not found, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
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 — Troubleshoot Discord No Route or RTC Connecting voice errors by following the official decision path while preserving user data.
IS-0005
Troubleshoot IS-0005 in Epic Games Launcher
Epic Games Launcher — Record IS-0005, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
LS-0013
Troubleshoot LS-0013 in Epic Games Launcher
Epic Games Launcher — Record LS-0013, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
MD-0011-1037
Troubleshoot MD-0011-1037 in Epic Games Launcher
Epic Games Launcher — Record MD-0011-1037, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
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.
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.
No Route
Fix Discord No Route or RTC Connecting voice errors
Discord — Troubleshoot Discord No Route or RTC Connecting voice errors by following the official decision path while preserving user data.
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.
Outlook.exe /resetnavpane
Fix “Cannot start Microsoft Outlook” with resetnavpane
Classic Outlook for Windows — Troubleshoot “Cannot start Microsoft Outlook” with resetnavpane by following the official decision path while preserving user data.
RTC Connecting
Fix Discord No Route or RTC Connecting voice errors
Discord — Troubleshoot Discord No Route or RTC Connecting voice errors by following the official decision path while preserving user data.
Repository not found
Fix GitHub Desktop Authentication failed or Bad credentials
GitHub Desktop — Troubleshoot GitHub Desktop Authentication failed or Bad credentials by following the official decision path while preserving user data.
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 — Repair only the outgoing SMTP path without changing incoming settings or deleting local mail.
SU-PQR1603
Troubleshoot SU-PQR1603 in Epic Games Launcher
Epic Games Launcher — Record SU-PQR1603, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
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.
Unable to sync
Troubleshoot Unable to sync in Steam Client / Steam Cloud
Steam Client / Steam Cloud — Record Unable to sync, verify the affected product and environment, correct the confirmed prerequisite, and retry once under the same conditions.
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.
chrome://management
Identify the source of Chrome “Managed by your organization”
Google Chrome — Identify the source of Chrome “Managed by your organization” by following the official decision path while preserving user data.
chrome://policy
Identify the source of Chrome “Managed by your organization”
Google Chrome — Identify the source of Chrome “Managed by your organization” by following the official decision path while preserving user data.
empty token
Fix GitHub Desktop Authentication failed or Bad credentials
GitHub Desktop — Troubleshoot GitHub Desktop Authentication failed or Bad credentials by following the official decision path while preserving user data.
global-messages-db.sqlite
Rebuild Thunderbird’s global search index when results are blank or slow
Mozilla Thunderbird — Recreate only the search database to fix missing or slow results while preserving messages.
parent.lock
Fix Firefox “already running” or profile-in-use errors
Mozilla Firefox — Troubleshoot Firefox “already running” or profile-in-use errors by following the official decision path while preserving user data.
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.
thunderbird -P
Recover a missing or inaccessible Thunderbird profile
Mozilla Thunderbird — Repair Thunderbird’s profile location and default selection without deleting mail data.