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

Microsoft Teams Service Unavailable for a Specific User: Fix

If a single user in your organization sees a 'Service Unavailable' error in Microsoft Teams while...

Fix 'Windows Activation Service Not Starting' Permission Denied

When you see "Windows Activation Service not starting" with a "permission denied" error, the serv...

How to Fix BitLocker Module Not Found or Permission Denied Errors

Windows Defender Not Working After Update: Checklist

After a Windows Update, Windows Defender (now called Microsoft Defender Antivirus) may stop worki...

Fix Firefox Not Responding: Disable Hardware Acceleration

If Firefox frequently stops responding, freezes, or shows a "Not Responding" message, hardware ac...

Fix OBS Black Screen but Audio Works: Step-by-Step Guide

If OBS Studio shows a black screen in your source preview or stream but audio is working fine, yo...