Visitor
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2 Messages
IMAP issues with Comcast since Nov 9th
On Nov 9th, all of my devices quit syncing with Comcast. I use WIndows Outlook 2024 pro and my iphone and Ipad. The error I get on my PC is "we couldn't connect to the incoming (IMAP) server. None of the authentication methods supported by Outlook are supported by your server" I also received a security warning "The server you are connected to is using a security certificate that cannot be verified. The target principal name is incorrect." I then tried my Iphone and Ipad and received the error " Invalid username and/or password. Please check your SMTP user name and password.
Actions taken
- Review and made sure the Incoming and outgoing mail servers were correct (Example imap.comcast.net (port 993,SSL enabled)
- I changed my password on comcast to see if that helped the process. It did not.
- I tried on a different network, no luck
- I totally deactivated Norton Firewall when signing in...no luck
- Cleared the outlook cache. No luch
- removed and tried to re-establish the account. No change
I am at wits end and it has been extremely frustrating. Any ideas to help




Anon1395493
New Poster
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2 Messages
46 minutes ago
Same problem with IMAP from Outlook with intermittent server connection error; connection on smtp for outbound is fine. IMAP didn't work for two days on one Win10/Office2021 PC and then suddenly downloaded and worked for 24 hours but not connecting again today for more than 6 hours; Just now suddenly working again. Very similar problem with Android cell; did not work for a couple of days and then suddenly downloading messages but quit again at 12:15AM today and still not connecting for inbound messages. One other Win11/Office 2021 PC consistently works upload and download. All settings are correct and have not been changed.
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