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

Fix Windows Security 'Failed to Start' Group Policy Error

You click the Windows Security icon in the taskbar or try to open it from Settings, but nothing h...

Fix PuTTY Connection Refused After Server Restart

You restart your server, open PuTTY, and see "Connection refused". This is a com...

Fix "Command Prompt Module Not Found Permission Denied"

You type a command like python or npm in Command Prompt and get an erro...

Fix Windows Update Blank Screen with Bootable USB

After a Windows Update, some users encounter a blank screen—no login prompt, no cursor, just a bl...

Fix Windows Security Authentication Error 0x80070035

Outlook Version Mismatch Between Client and Server: Fixes

You might see errors like 'The information store could not be opened' or 'Your Microsoft Exchange...