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

How to Reduce Microsoft Teams CPU Usage During Meetings

If your laptop fan spins up or your video stutters during Teams meetings, CPU usage is likely the...

Fix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN

How to Fix OneDrive Sync Issues After a Windows Update

After a Windows update, you might find OneDrive stuck on "Processing changes" or showing sync err...

UFW Allow Port Not Working After Reboot: Fixes That Actually Work

You added a UFW rule to allow a port, it works fine until you reboot, then the port is blocked ag...

Fix Windows Defender Security Center Not Opening

When you click the Windows Defender Security Center icon or try to open it from Settings, nothing...

How to Fix PowerShell Error 0x80070002 (File Not Found)

PowerShell error 0x80070002 typically means the system cannot find the file specified. This often...