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

Fix PowerShell Startup Script Not Running After Logon

You’ve set up a PowerShell script to run at startup, but after logging in, nothing happens. The s...

How to Fix Windows Update 502 Bad Gateway Error

You're trying to run Windows Update and you get a 502 Bad Gateway error. The update check fails, ...

How to Clear SSH Known Hosts and Fix Host Key Verification Failed

Fix Microsoft Teams Dependency Conflict Permission Denied

You try to install or update a Microsoft Teams app or custom bot, and get an error like 'dependen...

How to Fix Windows Activation Service Not Running or Disabled

If you see an error that the Windows Activation Service is not running or disabled, it usually me...

Fix Windows Defender Service Not Starting (Error 0x80070422)

You try to start Windows Defender but get error 0x80070422: “The service cannot be started, eithe...