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 Chrome Browser Config Not Working After Update
After a Chrome update, you might find that your browser configuration—such as bookmarks, extensio...
Fix Microsoft Store Apps Not Updating After Windows Update
After a Windows update, you might find that your Microsoft Store apps refuse to update. They may ...
Fix Nginx Config Test Fails with 'upstream host not found'
You run nginx -t and get upstream host not found. The config test fails...
Fix Windows Search After Disabling Cortana
If you've disabled Cortana and find that Windows Search no longer returns results or runs slowly,...
Fix Windows Update 404 Not Found Using Command Prompt
If you see a 404 error when checking for Windows updates, it usually means the update files canno...
Topic paths
Quick titles
Troubleshoot Windows Defender Not Starting ErrorSetting Up Command Prompt for Python: A Practical GuideWindows Activation Memory Leak Fix ChecklistRelocate Windows Security Event Log Using RegistryTroubleshooting Python Module Not Found Despite InstallationGit Push Rejected: Non-Fast-Forward Error FixWindows Security Not Working on Mac: Fixes and WorkaroundsWindows 504 Activation Error: Causes and Solutions