Software comparisons, alternatives, and tool decision notes.

Fix Windows Update Authentication Failed Due to Group Policy

You try to run Windows Update and get an error like "Authentication failed" or "0x80070005" – and...

How to Fix Outlook Port 993 Already in Use Error

When configuring an IMAP account in Outlook, you might see an error message saying "Port 993 is a...

Fix Outlook Blank Screen After Office Installation

Symptom and likely cause

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

Fix 'Authentication Failed' Error in Net Use Command

When you run net use to map a network drive and get 'System error 1326: Logon failur...

Fix Remote Desktop Gateway Server Unavailable Error Code 500

When you try to connect to a remote desktop through a Remote Desktop Gateway (RD Gateway) and see...

How to Fix Chrome Authentication Failed Due to Proxy Settings

If you see 'authentication failed' in Chrome when trying to access a website, your proxy settings...