Checklists for software errors, setup, and tool workflows.

Fix Windows Update 502 Bad Gateway Due to Firewall Settings

When Windows Update fails with a 502 Bad Gateway error, it often points to a network issue—common...

Fix Microsoft Teams Microphone Not Working on Mac

If your microphone isn't working in Microsoft Teams on a Mac, you're not alone. The issue often a...

Fix Microsoft Teams Microphone Not Detected in Windows

Common Causes

• Microphone permissions disabled for Teams in Windows settings.

Fix Putty Connection Refused Due to Windows Firewall

You're trying to SSH into a remote server using Putty, but you get a 'Connection refused' error. ...

Fix Command Prompt Crashing Due to Corrupted System Files

If Command Prompt opens briefly and then closes immediately, or crashes during use, corrupted sys...

Fix Windows Search Authentication Failed in Windows 11

If you see an 'authentication failed' error when using Windows Search in Windows 11, the search i...