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

Windows Activation Offline Installer Setup Guide

If you're trying to activate Windows without an internet connection, the offline activation metho...

Fix Windows Security Authentication Error 0x80070035

Fix Microsoft Teams Connection Refused Due to Firewall Settings

When Microsoft Teams shows a 'connection refused' error, it usually means a firewall or proxy is ...

GitLab Runner Not Picking Up Jobs: Common Fixes

You've set up a GitLab Runner, but jobs sit in the queue with no signs of being picked up. This g...

Fix 'File Locked by Unknown Process' in Command Prompt

You try to delete, rename, or move a file, but Windows says it's locked by an unknown process. Th...

Fixing PowerShell Update Error 0x800f081f (DISM Source Files)

If you see error 0x800f081f when installing a PowerShell update via Windows Update o...