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

How to Resolve Command Prompt Version Mismatch

You open Command Prompt and see a version number that doesn't match what you expect—maybe it show...

Fix Windows Defender File Locked During Scan

You run a Windows Defender scan and it reports that a file is locked and can't be scanned. This i...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED Error

When you see "ERR_TUNNEL_CONNECTION_FAILED" in Chrome, it usually means your browser can't establ...

OneDrive Sync Settings Not Saving? Here's How to Fix It

You change your OneDrive sync settings—like which folders to sync or the bandwidth limit—but the ...

Fix Remote Desktop Black Screen on Ubuntu

You connect to your Ubuntu machine via Remote Desktop (RDP or VNC) and see only a black screen. T...

How to Fix Outlook Proxy Authentication Failed Error