Email showing "Authentication Failed"
4.5
The server rejects your username or password.
Symptoms
- Password prompt loop
- "Invalid Credentials"
- Account offline
Possible Causes
- Wrong password
- 2FA requires App Password
- Account locked
Step-by-Step Fix
1
Verify Password
Log in via the webmail interface to ensure your password is correct.
2
Generate App Password
If you have 2FA enabled, you must use a specific App Password for Outlook/Apple Mail.
3
Check Caps Lock
A simple but common cause of login failures.
When to See a Technician
Modern services like Gmail and Outlook often require "OAuth2" authentication instead of "Normal Password".
Rate this Fix
0 / 5(0 ratings)
Comments (0)
No comments yet. Be the first to share!