How to Fix Microsoft Store Error 404 (Not Found)
If you see a 404 error when trying to open an app or page in the Microsoft Store, it usually mean...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Defender Service Not Starting with Permission Denied
If you see 'Windows Defender service not starting – permission denied' when trying to enable Micr...
Fix Microsoft Teams 'Permission Denied' When Sharing Screen
When you try to share your screen in Microsoft Teams and get a 'permission denied' error, it usua...
Fix Windows Activation Version Mismatch After Upgrade
After upgrading Windows—whether from Home to Pro or from an older build to a newer one—you might ...
Fix PowerShell 504 Gateway Timeout via Proxy Settings
When PowerShell commands return a 504 Gateway Timeout, it often means the proxy ...
Fix Windows Security 502 Bad Gateway Sync Error
You open Windows Security and see a 502 Bad Gateway error when it tries to sync. This usually mea...
Topic paths
Quick titles
Troubleshoot OneDrive Sync Module Not FoundTroubleshoot Windows Search Index Paused by SyncFix Windows Defender Connection Refused After UpdateChrome Profile Error: Extensions Not Loading FixHow to Fix Windows Activation Error 0x803fa067Troubleshoot PowerShell Profile Loading ProblemsTask Scheduler Proxy Authentication Failed GuideTroubleshooting Cloudflare SSL Redirect Loops