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

How to Enable Windows Terminal Service After It Becomes Unavailable

When the Windows Terminal Service (TermService) becomes unavailable, remote desktop connections f...

OneDrive Sync Not Working on Windows 11: Practical Fixes

If OneDrive has stopped syncing on your Windows 11 PC, you're probably seeing error icons or stat...

Fix 502 Bad Gateway After Reboot in Command Prompt

If you see a 502 Bad Gateway error after rebooting your server or workstation, i...

Fix Windows Defender Not Opening Error 404

You try to open Windows Defender and get an error 404 – the page or resource can't be found. This...

How to Fix Windows Update Access Denied Error in Command Prompt

Fix Windows Defender Authentication Failed After Update

After a recent Windows update, you might see an error like "Authentication failed" when trying to...