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

How to Fix DNS Errors by Setting Up Windows Defender

If you're seeing DNS errors while browsing—like "DNS server not responding" or "DNS probe finishe...

How to Fix Windows Update Module Not Found Error

You may see 'Windows Update module not found' when trying to check for updates. This usually mean...

Fix VirtualBox Kernel Driver Permission Denied on Linux

Fix Windows Security Certificate Error in Outlook 365

You open Outlook 365 and see a security certificate warning: "There is a problem with the proxy s...

How to Fix GitHub Actions Permission Denied (publickey) Error

You're running a GitHub Actions workflow and see Permission denied (publickey) when ...

Troubleshoot 504 Gateway Timeout in Windows Security App

When you open Windows Security (formerly Windows Defender Security Center) and see a 504 ...