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

Fix Windows Activation Proxy Server Not Responding

When you try to activate Windows and see “proxy server not responding,” it usually means Windows ...

How to Fix '404 Not Found' File Path Errors in CMD

Fix Windows Update Stuck at Blank Screen During Automatic Repair

You're running Windows Update, and after a restart, the screen goes blank—no cursor, no logo, jus...

How to Fix CMD High Memory Usage

If you notice that Command Prompt (cmd.exe) is using an unusually high amount of memory (e.g., hu...

Fix Outlook Authentication Failed Error in Exchange Settings

You open Outlook and see an authentication failed error tied to your Exchange account. The passwo...

Fix Windows Update Error 0x80070643 in Windows 11

You're trying to install a Windows 11 update, but it fails with error 0x80070643. This usually me...