Fix Windows Search Returning 404 Not Found in Command Prompt
If you see a "404 Not Found" error when using Windows Search from the Command Prompt, it usually ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Microsoft Store Not Opening on Mac
If you're trying to open the Microsoft Store on your Mac and nothing happens—or you see a blank p...
Fix Chrome Profile File Locked After Crash
If Chrome crashes and you see a message that your profile file is locked, it usually means Chrome...
Fix Task Scheduler Access Denied After Windows Update
After a recent Windows update, you may see "Access Denied" when trying to create, modify, or run ...
Fix Windows Defender Module Not Found After Antivirus Uninstall
After uninstalling a third-party antivirus program, Windows Defender may fail to load its modules...
Outlook 404 Not Found on Shared Mailbox: Fixes & Checks
You try to open a shared mailbox in Outlook and see a 404 Not Found error. This usually means Out...
Topic paths
Quick titles
Troubleshooting Error 0x80073b01 in Windows SecurityFix Jagged or Misaligned Fonts in Windows TerminalHow to Roll Back Windows Security MigrationHow to Resolve Windows Activation Update HangWindows 11 Remote Desktop Auto Start Not WorkingHow to Fix 'powershell not recognized' ErrorResolve Blank Screen on Boot into Safe ModeResolve Windows Activation Timeout Due to Network Change