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Aceq2jot's avatar
Aceq2jot
Occasional Reader
Nov 05, 2025

Comcast email transition to Yahoo

So here is my problem and I have been battling this for 5 days now and Xfinity and Yahoo support keep striking out. I can access my account just fine in Outlook Classic. If I slide the slide over to ...
office 365
outlook
Kidd_Ip's avatar
Kidd_Ip
MVP
Nov 06, 2025

See whether below can help:

 

1. Use Outlook Classic
•    Since it works reliably with Yahoo’s app password, stick with it until Microsoft and Yahoo resolve the sync issue.
•    You can disable the “Try the new Outlook” toggle to stay in Classic mode.
2. Try Adding the Account via IMAP in New Outlook (Advanced Setup)
•    Go to New Outlook > Add Account > Advanced Setup > IMAP
•    Use these settings: 
o    Incoming server: imap.mail.yahoo.com, Port: 993, SSL: Yes
o    Outgoing server: smtp.mail.yahoo.com, Port: 465 or 587, SSL: Yes
o    Username: your full Comcast.net email
o    Password: Yahoo app password (not your regular password)
3. Generate a Fresh App Password in Yahoo
•    Go to your Yahoo account security settings
•    Generate a new app password specifically for Outlook
•    Use this new password when setting up the account
4. Avoid OAuth Setup for Now
•    The new Outlook tries to use OAuth for Yahoo, which may not be fully supported for Comcast.net aliases.
•    Stick to manual IMAP setup with app password until OAuth integration is stabilized.

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