How to Fix Windows Defender 404 Not Found Error
If you see a "404 Not Found" error when opening Windows Defender, it often means a required file ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Microsoft Store Proxy Error
You open Microsoft Store and see a message like ‘Proxy server isn’t working’ or ‘Check your proxy...
Fix Windows Update Stuck at 100% in Safe Mode
If you boot into Safe Mode to troubleshoot a stuck Windows Update, only to find the update still ...
How to Fix Windows Security Auto Start Disabled
If you notice that Windows Security (formerly Windows Defender) isn't starting automatically with...
Fix Chrome 504 Gateway Timeout After Update
After a recent Chrome update, you may see a 504 Gateway Timeout error when tryin...
Fix OneDrive Update Error Permission Denied on Windows 10
When updating OneDrive on Windows 10, you may see a “Permission Denied” error. This usually means...
Topic paths
Quick titles
Troubleshoot Microsoft Store Not Working and High CPUHow to Fix PowerShell Stuck on LoadingMicrosoft Store Not Opening? Clear the Corrupted CacheWindows 10 Activation Access Denied Error FixSpeed Up Windows Activation: Practical FixesReduce SearchIndexer.exe High CPU and RAM UsageInstall NuGet Provider Manually Without InternetResolve Chrome Profile Error Invalid Configuration on Windows 10