Fix Windows Activation Authentication Failed Error: License Not Genuine
When you see a message like “Windows activation authentication failed” or “license not genuine,” ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Task Scheduler 'File Locked by Another Process' Error
When you try to run a scheduled task in Windows Task Scheduler, you might see an error like "The ...
Microsoft Store File Locked: Troubleshooting Checklist
When you try to install or update an app from the Microsoft Store and get an error about a file b...
Fix Windows Search Not Finding Files in a Folder
You open a folder, type a filename into the search box, and Windows returns nothing—even though y...
Fix Outlook Migration Halted by Large PST File
If your Outlook migration stops or errors out partway through, a large PST file is a common cause...
Fix PowerShell Azure Token Expiring After 1 Hour
If you're running PowerShell scripts against Azure and find that your authentication token expire...
Topic paths
Quick titles
Resolve OneDrive 'Connection Refused' After Windows UpdateWindows 10 Python Module Missing: Troubleshooting GuideTask Scheduler DNS Error: How to FixOutlook Keeps Asking for Password Windows 11Fix Windows Defender Token Expired Registry ErrorChrome Profile Configuration for Multiple UsersHow to Speed Up Windows Update DownloadsFix Outlook Module Missing Error