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

Fix Windows Defender Stuck on Loading Black Screen

If Windows Defender (Microsoft Defender Antivirus) hangs on a black screen with a spinning or fro...

Fix Chrome Extension Disabled Automatically

You install a useful extension, but Chrome keeps turning it off. Sometimes it says the extension ...

Fix WinRAR Checksum Error on Windows 10

If you see a 'Checksum error' or 'CRC failed' message when extracting a RAR or ZIP file in WinRAR...

Fix CMD Service Unavailable Due to Group Policy

Situation

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

How to Fix Command Prompt DNS Errors in Windows 10

When you see a DNS error in Command Prompt—like “DNS request timed out” or “could not find host”—...

Fix Microsoft Store Not Opening After Update

After a Windows update, you might click the Microsoft Store icon and see nothing happen—no window...