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

How to Fix Postman SSL Certificate Error

You see an SSL certificate error in Postman when trying to send a request to an HTTPS endpoint. T...

Fix High CPU Usage by MsMpEng.exe (Windows Defender)

If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

How to Fix Chrome Extensions Not Loading After Update

After a Chrome update, you might find that some or all of your extensions have stopped working—th...

Fix Windows Terminal Localhost Connection Refused

You open Windows Terminal, try to connect to a local service like a web server or database, and g...

Fix OneDrive Blank Screen Error 0x8004de40

You open OneDrive and see a blank screen with error code 0x8004de40. This usually means the app c...