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

Fix 'Port Already in Use' Error with No Visible Process

When you try to start a server or service on a specific port, you might see an error like "port a...

Fix Remote Desktop Lag on Ubuntu: Practical Steps

If your remote desktop session on Ubuntu feels sluggish, you’re not alone. Lag can stem from netw...

Fix Microsoft Teams Authentication Failed Due to Proxy

If you see 'Authentication failed' when launching Microsoft Teams and you're behind a corporate p...

How to Fix Git Fatal Repository Not Found Error

Fix WinRAR Checksum Error After Update

After updating WinRAR, some users see a "checksum error" when opening archives that worked before...

Fix Windows Activation 502 Bad Gateway After Upgrade

After a Windows upgrade, you might see a '502 Bad Gateway' error when trying to activate. This us...