Knowledge base for software setup, errors, and daily tool work.

Check If Your Windows License Is Retail or OEM

If you're troubleshooting activation issues or planning to transfer Windows to a new computer, kn...

Fix Windows Update Stuck on Checking for Updates on Mac

If you're running Windows on a Mac via Boot Camp or a virtual machine (Parallels, VMware Fusion, ...

Fix 'Windows Defender Not Recognized' Error in Command Prompt

Fix OneDrive Sync 504 Gateway Timeout Error

If you see a "504 Gateway Timeout" error when syncing OneDrive, it usually means the sync service...

Fix Windows Defender Service Not Starting (Error 0x80070422)

You try to start Windows Defender but get error 0x80070422: “The service cannot be started, eithe...

How to Fix a Chrome Extension That Is Not Responding

You click an extension icon, but nothing happens. Or the popup shows a loading spinner that never...