Windows Error Code Lookup (0x… Fix Finder)
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What does this Windows error code mean?
Search 57 Windows 0x… error codes we've written full fix guides for. Type the code (even partially — "0x8007" narrows instantly), an error name, or a symptom, or browse by category.
0x00000004
Blue Screen of Death caused by Windows accessing an unavailable memory location.
Top fixes: Update the drivers causing the crash · Run memory and disk diagnostics · Repair system files with SFC
0x0000000a — IRQL_NOT_LESS_OR_EQUAL
BSOD caused by a driver or process accessing unauthorized memory.
Top fixes: Update or roll back drivers · Test RAM with Windows Memory Diagnostic · Run SFC and DISM repairs
0x0000001a — MEMORY_MANAGEMENT
Blue screen caused by severe memory handling problems.
Top fixes: Test RAM with Windows Memory Diagnostic · Fix hard drive errors with chkdsk · Update or roll back drivers
0x0000003b — SYSTEM_SERVICE_EXCEPTION
Windows blue screen from faulty drivers or corrupted system files.
Top fixes: Update graphics and network drivers · Run SFC and DISM scans · Test your RAM
0x00000050 — PAGE_FAULT_IN_NONPAGED_AREA
BSOD triggered when Windows references invalid memory.
Top fixes: Test RAM with Memory Diagnostic · Update or reinstall faulty drivers · Check the hard drive for bad sectors
0x0000007b — INACCESSIBLE_BOOT_DEVICE
Windows loses access to the system partition during boot.
Top fixes: Change the SATA mode in BIOS · Run Windows Startup Repair · Rebuild the Boot Configuration Data (BCD)
0x0000007f — UNEXPECTED_KERNEL_MODE_TRAP
Hardware blue screen from faulty RAM, overheating, or bad drivers.
Top fixes: Test RAM with Windows Memory Diagnostic · Check CPU and GPU temperatures · Reseat RAM and hardware components
0x000000d1 — DRIVER_IRQL_NOT_LESS_OR_EQUAL
BSOD caused by faulty or outdated drivers.
Top fixes: Update your device drivers · Run SFC and DISM scans · Check for faulty RAM
0x00000133 — DPC_WATCHDOG_VIOLATION
Blue screen caused by SSD or storage drivers, outdated firmware, or hardware conflicts.
Top fixes: Update SSD and storage drivers · Change the SATA controller mode in BIOS · Run SFC and DISM scans
0x80004002 — No such interface supported
Blocks Windows Update or Microsoft Store operations with a 'No such interface supported' message.
Top fixes: Reset Windows Update components · Re-register DLL files · Repair system files with DISM and SFC
0x8000ffff — Catastrophic Failure
Catastrophic Failure error that blocks Windows Update, System Restore, and Microsoft Store.
Top fixes: Run SFC and DISM scans · Reset Windows Update components · Disable third-party antivirus
0x8007001f — ERROR_GEN_FAILURE
Blocks Windows feature updates during the SAFE_OS phase, often from audio driver conflicts.
Top fixes: Update audio drivers · Reset Windows Update components · Delete temporary update folders
0x80070020 — ERROR_SHARING_VIOLATION
Windows Update fails because update files are locked by another process.
Top fixes: Disable antivirus temporarily · Clear the SoftwareDistribution folder · Run updates in Safe Mode
0x80070032 — The request is not supported
Feature updates fail with 'The request is not supported', often because Windows Recovery Environment is disabled.
Top fixes: Enable Windows Recovery Environment (WinRE) · Run SFC and DISM scans · Reset Windows Update components
0x80070070
The system lacks enough free disk space to complete an operation like a Windows update.
Top fixes: Run Disk Cleanup · Delete temporary files · Free space on the system drive
0x800703f1
Windows Update failure caused by corrupt update components or system files.
Top fixes: Run the Windows Update Troubleshooter · Reset update components via Command Prompt
0x80070426
A required Windows service is inactive or system files are corrupted, blocking Update, Store, and the Xbox app.
Top fixes: Reset Windows Update components · Run SFC /scannow
0x8007042b
Windows Update failure often caused by corrupted update files or antivirus interference.
Top fixes: Temporarily disable antivirus · Reset Windows Update components · Restart the BITS service
0x8007042c
Windows Firewall or Update services fail to start.
Top fixes: Set the Firewall and Update services to Automatic · Reset update components · Scan for malware
0x80070652 — ERROR_INSTALL_ALREADY_RUNNING
Updates fail because another installation is already running or update files are corrupted.
Top fixes: Run the Update Troubleshooter · Reset the SoftwareDistribution folder · Install the update manually
0x800706ba — RPC server unavailable
Windows Update cannot connect to the RPC (Remote Procedure Call) server.
Top fixes: Start the RPC service · Configure Windows Firewall for RPC · Run SFC and DISM scans
0x8007139f
Appears during updates, Mail app connections, BitLocker operations, or Xbox Game Pass installs.
Top fixes: Run SFC and DISM scans · Reset Windows Update components · Disable third-party antivirus
0x80071a91
Blocks Windows 10 updates due to FSRM service issues or corrupted system files.
Top fixes: Reset FSRM with fsutil resource setautoreset · Run the Update Troubleshooter · Clear CLFS transaction logs
0x80072efe
Windows can't connect to Microsoft's update servers.
Top fixes: Correct system date and time · Temporarily disable the firewall · Reset Windows Update components
0x80072f8f — ERROR_WINHTTP_SECURE_FAILURE
Windows can't reach Microsoft servers because of clock drift or failed SSL certificate verification, hitting Update, activation, and Store.
Top fixes: Sync your date and time · Install root certificate updates · Run the Windows Update Troubleshooter
0x80080008
Corrupted system files or broken update components block Windows Update.
Top fixes: Run SFC and DISM scans · Reset Windows Update components · Re-register Wups2.dll
0x8024001e
Blocks Windows Update and Microsoft Store downloads.
Top fixes: Run the Update Troubleshooter · Reset Windows Update components · Re-register Windows Update DLLs
0x80240031
Updates blocked by corrupted files, driver conflicts, or antivirus software.
Top fixes: Run SFC and DISM scans · Perform a clean boot · Temporarily disable the graphics driver
0x80240439
Windows received invalid data during updates or Store downloads.
Top fixes: Clear the Windows Store cache with wsreset · Restart Windows Update services · Run SFC to fix corrupted files
0x80246007
Updates blocked by corrupted update components or BITS service issues.
Top fixes: Reset the SoftwareDistribution folder · Restart the BITS and Windows Update services · Retry the update
0x8024a105
Blocks Windows Update due to corrupted files, stopped services, or malware.
Top fixes: Run the Update Troubleshooter · Delete the SoftwareDistribution folder · Run SFC and DISM scans
0x8e5e03fa
Prevents Windows updates from installing due to corrupted system files or registry issues.
Top fixes: Run the Windows Update Troubleshooter · Repair system files with SFC and DISM · Try the built-in Administrator account
0x8004242d — Failed to format the selected partition
Windows Setup can't format the selected partition during installation.
Top fixes: Clean the disk with Diskpart · Convert the dynamic disk to basic · Delete all partitions and recreate them
0x80300001
Windows can't install to the selected location.
Top fixes: Switch BIOS from Legacy to UEFI mode · Format the target partition during setup · Verify the installation media isn't corrupted
0x80300024
Windows can't install to the selected disk.
Top fixes: Disconnect unnecessary drives · Set the correct boot order in BIOS · Format the target partition
0xc1900101
Blocks Windows upgrades due to driver conflicts, usually graphics or network drivers.
Top fixes: Update all drivers before upgrading · Disconnect all external devices · Run the Windows Update Troubleshooter
0xe0000100
Occurs during Windows installation or updates due to corrupted disk partitions, faulty installation media, or system file damage.
Top fixes: Run the update troubleshooter · Check your disk health · Recreate your installation media
0xc000000d
Boot failure caused by corrupted or missing Boot Configuration Data (BCD).
Top fixes: Run Startup Repair from installation media · Rebuild the BCD with bootrec commands · Run System Restore
0xc0000098
The Boot Configuration Data (BCD) file is corrupted or missing, preventing Windows 10 from starting.
Top fixes: Use Startup Repair from installation media · Rebuild BCD with bootrec commands · Run CHKDSK
0xc0000185
Boot failure caused by corrupted Boot Configuration Data; you need a Windows installation USB to reach the recovery tools.
Top fixes: Rebuild BCD using bootrec commands · Run Startup Repair · Check disk errors with chkdsk
0x80040610
Outlook send/receive failure caused by a broken connection to the email server.
Top fixes: Repair the PST file with ScanPST.exe · Verify email account settings · Reduce attachment sizes
0x800408fc — Server not found
Outlook can't find or connect to the mail server.
Top fixes: Verify incoming and outgoing server settings · Check Windows Firewall rules · Repair Outlook data files
0x80042109
Outlook can't connect to the outgoing SMTP server, blocking outgoing email.
Top fixes: Switch the SMTP port to 587 with TLS · Confirm your firewall allows Outlook · Re-add your email account
0x80048002 — Task cancelled
Outlook reports the task was cancelled before it completed.
Top fixes: Reconfigure email account settings · Disable interfering antivirus software · Repair corrupted PST files
0x80000003 — STATUS_BREAKPOINT
Breakpoint exception that crashes applications when a process hits an unexpected stopping point.
Top fixes: Run SFC /scannow to repair system files · Perform a clean boot to isolate conflicts · Run Windows Memory Diagnostic
0xc0000005 — Access Violation
Access violation that occurs when a program tries to use unauthorized memory.
Top fixes: Check for faulty RAM · Run SFC to repair corrupted system files · Update your drivers
0xc0000006 — STATUS_IN_PAGE_ERROR
Prevents programs from launching, especially from network drives.
Top fixes: Perform a clean boot · Clear the AppInit_DLLs registry key · Update outdated drivers
0x80004004 — E_ABORT
An operation was prematurely terminated; commonly affects Windows Defender updates, SCCM, and Teams.
Top fixes: Disable conflicting antivirus software · Restart the BITS service · Run general system repairs
0x80040154 — Class Not Registered
Windows can't locate a required COM component, hitting Windows Update, Outlook, and COM-dependent apps.
Top fixes: Re-register DLL files with regsvr32 · Run the Windows Update troubleshooter
0x80041003 — WMI Access Denied
WMI 'Access Denied' error when a user or process lacks permissions for a management operation.
Top fixes: Adjust WMI namespace permissions · Rebuild the WMI repository
0x80070570
File corruption or unreadable directories in Windows.
Top fixes: Run chkdsk /f /r to repair disk errors · Run SFC /scannow to fix corrupted system files
0x80070780 — File cannot be accessed by the system
Windows can't access a file due to permission issues, corrupted system files, or disk errors.
Top fixes: Switch to an administrator account · Run SFC and CHKDSK · Perform a clean boot
0x00000002
Windows can't connect to a network-shared printer.
Top fixes: Restart the Print Spooler service · Create a new local port · Reinstall the printer driver
0x801901f4
Blocks Microsoft Store sign-in.
Top fixes: Clear the Store cache with wsreset.exe · Switch DNS to Google or Cloudflare · Reset the Microsoft Store app
0xc004f050
Your product key doesn't match your Windows edition, such as using a Pro key on Home edition.
Top fixes: Enter the correct key for your edition · Run the Activation Troubleshooter · Upgrade to the matching edition
0xc00d36c4
Windows can't play a video due to missing codecs, unsupported formats, or file corruption.
Top fixes: Install a codec pack like K-Lite · Use VLC media player · Convert the video to a compatible format
0xc10100bf
The video file is unsupported, has a wrong extension, or is corrupted.
Top fixes: Install a codec pack like K-Lite · Try playing the file in VLC · Convert it with HandBrake
Privacy. Your search never leaves your browser. The lookup runs entirely client-side from a static table built from our own 57 error-code fix guides.
All 57 Windows error codes we cover
Tap a category to expand — same data as the lookup above, in plain-text form.
Blue screen (BSOD) error codes (9)
- 0x00000004 — Blue Screen of Death caused by Windows accessing an unavailable memory location.
- 0x0000000a (IRQL_NOT_LESS_OR_EQUAL) — BSOD caused by a driver or process accessing unauthorized memory.
- 0x0000001a (MEMORY_MANAGEMENT) — Blue screen caused by severe memory handling problems.
- 0x0000003b (SYSTEM_SERVICE_EXCEPTION) — Windows blue screen from faulty drivers or corrupted system files.
- 0x00000050 (PAGE_FAULT_IN_NONPAGED_AREA) — BSOD triggered when Windows references invalid memory.
- 0x0000007b (INACCESSIBLE_BOOT_DEVICE) — Windows loses access to the system partition during boot.
- 0x0000007f (UNEXPECTED_KERNEL_MODE_TRAP) — Hardware blue screen from faulty RAM, overheating, or bad drivers.
- 0x000000d1 (DRIVER_IRQL_NOT_LESS_OR_EQUAL) — BSOD caused by faulty or outdated drivers.
- 0x00000133 (DPC_WATCHDOG_VIOLATION) — Blue screen caused by SSD or storage drivers, outdated firmware, or hardware conflicts.
Windows Update error codes (23)
- 0x80004002 (No such interface supported) — Blocks Windows Update or Microsoft Store operations with a 'No such interface supported' message.
- 0x8000ffff (Catastrophic Failure) — Catastrophic Failure error that blocks Windows Update, System Restore, and Microsoft Store.
- 0x8007001f (ERROR_GEN_FAILURE) — Blocks Windows feature updates during the SAFE_OS phase, often from audio driver conflicts.
- 0x80070020 (ERROR_SHARING_VIOLATION) — Windows Update fails because update files are locked by another process.
- 0x80070032 (The request is not supported) — Feature updates fail with 'The request is not supported', often because Windows Recovery Environment is disabled.
- 0x80070070 — The system lacks enough free disk space to complete an operation like a Windows update.
- 0x800703f1 — Windows Update failure caused by corrupt update components or system files.
- 0x80070426 — A required Windows service is inactive or system files are corrupted, blocking Update, Store, and the Xbox app.
- 0x8007042b — Windows Update failure often caused by corrupted update files or antivirus interference.
- 0x8007042c — Windows Firewall or Update services fail to start.
- 0x80070652 (ERROR_INSTALL_ALREADY_RUNNING) — Updates fail because another installation is already running or update files are corrupted.
- 0x800706ba (RPC server unavailable) — Windows Update cannot connect to the RPC (Remote Procedure Call) server.
- 0x8007139f — Appears during updates, Mail app connections, BitLocker operations, or Xbox Game Pass installs.
- 0x80071a91 — Blocks Windows 10 updates due to FSRM service issues or corrupted system files.
- 0x80072efe — Windows can't connect to Microsoft's update servers.
- 0x80072f8f (ERROR_WINHTTP_SECURE_FAILURE) — Windows can't reach Microsoft servers because of clock drift or failed SSL certificate verification, hitting Update, activation, and Store.
- 0x80080008 — Corrupted system files or broken update components block Windows Update.
- 0x8024001e — Blocks Windows Update and Microsoft Store downloads.
- 0x80240031 — Updates blocked by corrupted files, driver conflicts, or antivirus software.
- 0x80240439 — Windows received invalid data during updates or Store downloads.
- 0x80246007 — Updates blocked by corrupted update components or BITS service issues.
- 0x8024a105 — Blocks Windows Update due to corrupted files, stopped services, or malware.
- 0x8e5e03fa — Prevents Windows updates from installing due to corrupted system files or registry issues.
Windows install & upgrade error codes (5)
- 0x8004242d (Failed to format the selected partition) — Windows Setup can't format the selected partition during installation.
- 0x80300001 — Windows can't install to the selected location.
- 0x80300024 — Windows can't install to the selected disk.
- 0xc1900101 — Blocks Windows upgrades due to driver conflicts, usually graphics or network drivers.
- 0xe0000100 — Occurs during Windows installation or updates due to corrupted disk partitions, faulty installation media, or system file damage.
Boot failure error codes (3)
- 0xc000000d — Boot failure caused by corrupted or missing Boot Configuration Data (BCD).
- 0xc0000098 — The Boot Configuration Data (BCD) file is corrupted or missing, preventing Windows 10 from starting.
- 0xc0000185 — Boot failure caused by corrupted Boot Configuration Data; you need a Windows installation USB to reach the recovery tools.
Outlook & email error codes (4)
- 0x80040610 — Outlook send/receive failure caused by a broken connection to the email server.
- 0x800408fc (Server not found) — Outlook can't find or connect to the mail server.
- 0x80042109 — Outlook can't connect to the outgoing SMTP server, blocking outgoing email.
- 0x80048002 (Task cancelled) — Outlook reports the task was cancelled before it completed.
App & program crashes error codes (3)
- 0x80000003 (STATUS_BREAKPOINT) — Breakpoint exception that crashes applications when a process hits an unexpected stopping point.
- 0xc0000005 (Access Violation) — Access violation that occurs when a program tries to use unauthorized memory.
- 0xc0000006 (STATUS_IN_PAGE_ERROR) — Prevents programs from launching, especially from network drives.
System files & services error codes (5)
- 0x80004004 (E_ABORT) — An operation was prematurely terminated; commonly affects Windows Defender updates, SCCM, and Teams.
- 0x80040154 (Class Not Registered) — Windows can't locate a required COM component, hitting Windows Update, Outlook, and COM-dependent apps.
- 0x80041003 (WMI Access Denied) — WMI 'Access Denied' error when a user or process lacks permissions for a management operation.
- 0x80070570 — File corruption or unreadable directories in Windows.
- 0x80070780 (File cannot be accessed by the system) — Windows can't access a file due to permission issues, corrupted system files, or disk errors.
Printer error codes (1)
- 0x00000002 — Windows can't connect to a network-shared printer.
Microsoft Store error codes (1)
- 0x801901f4 — Blocks Microsoft Store sign-in.
Activation error codes (1)
- 0xc004f050 — Your product key doesn't match your Windows edition, such as using a Pro key on Home edition.
Video playback error codes (2)
- 0xc00d36c4 — Windows can't play a video due to missing codecs, unsupported formats, or file corruption.
- 0xc10100bf — The video file is unsupported, has a wrong extension, or is corrupted.
Every entry links to our full step-by-step fix guide for that code — symptoms and fixes above are summarized from those guides.