Windows Activation Service Unavailable on New Computer
You just set up a new computer, but when you try to activate Windows, you see an error that the a...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Windows Defender Not Turning On
Windows Defender (now called Microsoft Defender Antivirus) sometimes refuses to turn on or stay o...
Fixing Task Scheduler Version Mismatch (Event ID 104)
When Task Scheduler logs Event ID 104 with a version mismatch, tasks may fail to run or appear wi...
Stop OneDrive from Using Too Much CPU
If your computer feels sluggish and Task Manager shows OneDrive.exe eating CPU cycles, you're not...
How to Fix Windows Update 404 Not Found Error
When Windows Update returns a 404 Not Found error, it usually means the update server can't locat...
Fix Microsoft Teams Error 0x80070005: Access Denied
When Microsoft Teams shows error code 0x80070005, it usually means Teams can't access a needed fi...
Topic paths
Quick titles
Troubleshooting Chrome 504 Gateway Timeout ErrorWindows Activation Module Not Found After Update: FixResolve OneDrive 504 Error Step by StepFix Dependency Conflicts When Microsoft Store Games Won't LaunchResolve Chrome User Profile CorruptionRestore Scheduled Tasks After ResetService Unavailable in CMD: Troubleshooting GuideHow to Fix Windows Defender Stuck in Login Loop