How to Fix Windows Update Error 404 Not Found
You see error 404 when checking for updates in Windows Update. This usually means the update serv...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Terminal Offline Installer That Fails to Install
You download the Windows Terminal offline installer (a .msixbundle or .appxbundle file) from the ...
Fix Windows Search 404 Not Found Error via Registry
If Windows Search returns a '404 Not Found' error when you try to open the search pane or run a q...
Fix PowerShell Slow Performance After Update
After a Windows update, some users notice that PowerShell starts slowly or runs commands with a d...
Fix Task Scheduler Error 0x80070020: Port Already in Use
When you see error 0x80070020 in Task Scheduler with the message "port already in use," it usuall...
PowerShell Version Mismatch: A Sysadmin Checklist
You run a script that worked yesterday, and today it throws errors about missing cmdlets, incompa...
Topic paths
Quick titles
Microsoft Teams Configuration Token Expired FixFix Windows Search Update Configuration Failed ErrorRemote Desktop Client Missing: Troubleshoot mstsc ErrorFix Windows Search Indexing Paused or Not WorkingOutlook Memory Fix: Keep Your Add-Ins RunningFix Port Already in Use Error in Windows TerminalPowerShell Module Not Found Path TroubleshootingWindows Update 504 Timeout: Step-by-Step Network Fix