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

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

How to Fix Windows Defender Error 0x800704ec

When you see error 0x800704ec in Windows Defender (now called Microsoft Defender Antivirus), it u...

Fix Windows Activation Service Unavailable on Windows 10 Pro

If you see the error 'Windows Activation Service Unavailable' on Windows 10 Pro, it usually means...

GitLab Runner Configuration for Pending Jobs: A Troubleshooting Guide

You push a commit, the pipeline triggers, but jobs stay pending indefinitely. Th...

Fix Windows Defender Log File Access Denied Error

When you try to open Windows Defender logs (e.g., from Event Viewer or the Microsoft Defender por...

Fix Outlook Authentication Failed When Sending Email

If you get an authentication failed error when sending email in Outlook, the problem is usually a...