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

Fix Windows Security Offline Installer Error 0x80070643

You're trying to install Windows Security (formerly Windows Defender) using an offline installer,...

Microsoft Store Not Working After Update: Troubleshooting Checklist

After a Windows update, the Microsoft Store may fail to open, load slowly, or display errors like...

Fix Outlook High CPU Usage Caused by Antivirus Scanning

Symptoms and Likely Cause

You notice Outlook consuming 50% or more CPU, making your syste...

Fix SSL Certificate Errors in Windows Search

When Windows Search throws an SSL certificate error—often as 'The certificate is not valid' or 'A...

How to Fix Windows Search 502 Bad Gateway Error

If you see a 502 Bad Gateway error when using Windows Search, it usually means the search service...

How to Fix Chrome Extension Permission Denied Error

You try to install or run a Chrome extension and see "Permission denied" or similar. This usually...