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

Fix Windows Search Invalid Configuration After Update

After a Windows update, you might see an error like “Search is not working” or “Invalid configura...

Fix Windows Defender Blank Screen After Update

After a recent Windows update, you may open Windows Security (Windows Defender) and see a blank w...

Windows Security Troubleshooting Guide

Windows Security (formerly Windows Defender) usually runs quietly in the background, but sometime...

Fix Task Scheduler 'Access Denied' Error on Windows

When you try to create or modify a scheduled task in Windows Task Scheduler, you might see an 'Ac...

Fix Windows Update Module Not Found Error: Tool Usage & Repair

If you see an error message saying 'Windows Update module not found' or 'wuapi.dll is missing', W...

Fix Chrome SSL Certificate Error: Invalid Common Name