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

Windows Security Troubleshooting Guide

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

Fix Microsoft Teams Modern Authentication Failure

When Microsoft Teams shows 'We couldn't sign you in' or 'unable to authenticate with modern authe...

Outlook Backup Restore Sync Issues with Exchange

After restoring an Outlook backup or migrating data, you may find that emails, calendar items, or...

Fix Windows Update ‘Authentication Failed’ or ‘Password Incorrect’ Error

You try to check for Windows updates and see an error like “Authentication failed” or “Password i...

How to Fix Command Prompt High CPU Usage on Windows 10

Fix Windows Security DNS Error Blocking Internet Access

If your internet stops working and you see a Windows Security DNS error, it usually means the DNS...