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

Fix Windows Defender Error 0x80073b01 (Crash on Startup)

If Windows Defender crashes on startup with error code 0x80073b01, the antivirus service may be f...

How to Fix a File Locked by Another User in an RDP Session

You try to edit a file over Remote Desktop and get an error like "The file is locked by another u...

Fix 'File Locked by System Process' in Windows 10 Search

When you search for a file in Windows 10 and get an error that the file is locked by a system pro...

Fix Windows Security Token Expired Error 0x80070520

You see error 0x80070520 with the message 'The security token has expired.' This usually happens ...

Chrome Profile Not Syncing After Cache Clear: Fixes

You cleared Chrome's cache to free up space or fix a loading issue, but now your bookmarks, passw...

Fix CMD Service Unavailable Due to Group Policy

Situation

You open Command Prompt and see an error like "Command Prompt has been disabled...