Fix Windows Activation Service Unavailable on Windows 10 Pro
If you see the error 'Windows Activation Service Unavailable' on Windows 10 Pro, it usually means...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Chrome Invalid Configuration Error 0x80070057
If you see "Invalid configuration" with error code 0x80070057 in Chrome, it usually means Chrome'...
Fix OneDrive Permission Denied When Syncing Files
You see a 'permission denied' error while syncing files in OneDrive. This usually happens when On...
How to Fix PowerShell Blank Screen on Startup
When PowerShell opens to a blank screen with no prompt or output, the shell is usually loading a ...
Fix 'Windows Activation Key Not Accepted' Error
You enter a valid Windows product key and get an error saying it's not accepted. This is frustrat...
Fix OneDrive Sync Error 0x8007017c on Mac
You're syncing files in OneDrive on your Mac when a notification pops up: "We can't sync this fil...
Topic paths
Quick titles
How to Resolve Windows Store Error 0x80073cf9Windows Defender 404 Not Found Registry FixNew User's Guide to Outlook Email SetupFix Windows Update Error 0x80070020: File LockedBackup Scheduled Tasks Before Reinstalling WindowsFixing Chrome SSL Error: Invalid Common NameHow to Fix 502 Bad Gateway Activation in WindowsWindows 10 Chrome ERR_CONNECTION_RESET Troubleshooting