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

How to Fix Windows Defender Service Not Running

If you see a message that Windows Defender is not running or the security center shows it's off, ...

How to Fix Outlook Not Sending Emails

When Outlook won't send emails, you typically see the message stuck in the Outbox or an error lik...

Fix Windows Search Access Denied Error via Command Prompt

If you see an "Access Denied" error when trying to search files or rebuild the search index in Wi...

Fix 'Windows Security Authentication Failed' for Domain Credentials

Fix Windows Defender Blank Screen Error Code

When you open Windows Security and see a blank screen with an error code, it usually means a core...

Fix Windows Activation 502 Bad Gateway Due to Proxy Settings

If you see a "502 Bad Gateway" error when trying to activate Windows, the problem is often a misc...