Fix Windows Activation Server Not Available Error
When you see the message "Windows activation server is not available" while trying to activate Wi...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Nginx 404 Not Found with try_files Directive
You've set up your Nginx server block, but visiting your site returns a 404 Not Found error. The ...
How to Fix Task Scheduler File Locked Errors in Windows 10
You see a 'file locked' error when running a scheduled task in Windows 10. The task might fail to...
Fix Task Scheduler 404 Not Found Registry Error
If Task Scheduler shows a '404 not found' error when opening tasks or creating new ones, the issu...
Fix Microsoft Teams Audio Not Working on Mac
You join a meeting in Microsoft Teams on your Mac, but no one can hear you, or you can't hear the...
Fix Windows Security Not Opening or Running Slow
If Windows Security (formerly Windows Defender) won't open or takes forever to load, it's usually...
Topic paths
Quick titles
Fix Command Prompt Dependency Conflict in Windows 10Error 0x80070422: Windows Security Service Not RunningHow to Fix OBS Virtual Camera Driver Installation FailedFix Microsoft Store File Locked Setup Blocked ErrorWindows Terminal Version Mismatch Fix GuideResolve Windows Search Rate Limit ErrorFix 'Access Denied' When Running Commands on a Locked FileFix Windows Update Failed to Start After Reboot