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

How to Fix Windows Security 404 Not Found Error

If you see a '404 Not Found' error when opening Windows Security (formerly Windows Defender), the...

Windows Activation Token Expired After Hardware Change: Fix

After replacing a motherboard, CPU, or hard drive, you may see a message that your Windows activa...

Fix Windows Search Invalid Configuration After Update

After a Windows update, you might see an error like “Search is not working” or “Invalid configura...

Fix PowerShell Set-ExecutionPolicy RemoteSigned Not Working

You run Set-ExecutionPolicy RemoteSigned in PowerShell, but the change doesn't stick...

Fix Microsoft Teams Version Mismatch Update Required Error

Understanding the Error

When you see 'version mismatch update required' in Microsoft Team...

Fix Microsoft Store Apps Not Downloading or Updating

You open the Microsoft Store, tap Update or Install, and nothing happens—or the download stalls a...