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

Fix Chrome Authentication Failed on Windows 10

If Chrome keeps showing 'Authentication failed' when you try to sign in or sync on Windows 10, th...

Fix Outlook Blank Screen After Office Installation

Symptom and likely cause

After installing or updating Microsoft Office, Outlook may open ...

Fix Outlook High CPU Usage After an Update

After a recent Outlook update, you might notice your CPU usage spiking to 50-100% when Outlook is...

Microsoft Store SSL Certificate Error: Troubleshooting Checklist

You open Microsoft Store and see an SSL certificate error—maybe “ERR_CERT_AUTHORITY_INVALID” or a...

Checklist to Enable Windows Security Auto Start

If Windows Security (formerly Windows Defender) doesn't start automatically after you log in, you...

How to Fix Microsoft Store Not Working After Update

After a Windows update, the Microsoft Store may fail to open, load slowly, or show error codes. T...