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Outlook and iphone email stopped working
Xfinity was scheduled to make the TLS support changes on March 31, 2023.
My outlook 365 email and iphone mail app stopped working on March 30. Both have been working fine for years.
Neither app can access the Xfinity Imap server. In outlook I get the synchronizing folders error 0x800ccc0e, cannot connect to server.
Any ideas how to solves this?
EG
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110.3K Messages
2 years ago
The concern is not "Community Center" help related. Topic moved here to the proper help section for assistance.
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flatlander3
Problem Solver
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1.5K Messages
2 years ago
Your iphone does TLSv1.2 and TLSv1.3 natively. So does windows 10/11. Mac should too past Lion (before safari, sorry, sierra). TLS warning was for some versions of windows 7/8 that didn't ship with TLSv1.2. In my market, the auth server ONLY speaks TLSv1.2, and has for quite some time. Testing it:
# openssl s_client -connect imap.xfinity.com:993 -tls1_2
SSL-Session:
Protocol : TLSv1.2
Cipher : ECDHE-RSA-AES256-GCM-SHA384
# openssl s_client -connect imap.xfinity.com:993 -tls1_3
no peer certificate available
No client certificate CA names sent
New, (NONE), Cipher is (NONE)
How many things do you have checking your mail at the same time? For kicks, try disabling mail on your iPhone temporarily (settings -> mail -> accounts -> select the account -> switch off mail/notes), close your office 365. Close other things checking mail from your current network too -- especially mac mail. Wait about 10-15 minutes, then try office 365 again. Magically work then?
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flatlander3
Problem Solver
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1.5K Messages
2 years ago
Couple more:
Webmail still works though, right? Use the front door https://xfinity.com . Just a sanity check: use their web server on their network to connect to your mailbox. Is it there, and do your login credentials work? As long as you're in there, click the gear icon on the top right and go into settings. On the left side, make sure you're not auto forwarding mail to stray accounts (like yopmail.com or something odd you don't own). Just making sure it's locked down and not hijacked.
Also in there, in the "security" tab, make sure ".....allow 3rd party access..." box is checked: https://www.xfinity.com/support/articles/third-party-email-access Maybe that got reset or munged somehow. Maybe uncheck it and check it again.
Could also be mail is just currently broke for your area. If you really want to dig into it:
In my market, ICMP is blocked for the mail server, so you can't ping it to see if its alive. Windows by default doesn't have an openssl client you can poke at the auth server with, like I did with the commands above, but you can change that. Windows System Linux just a windows feature you can add easily enough. Get a powershell, but you have to run that as Administrator. Then just add Linux with the command "wsl --install". It downloads and installs a stripped down Ubuntu (it's small and doesn't take up much space). https://learn.microsoft.com/en-us/windows/wsl/install
When that's done, just type wsl in powershell or a cmd shell (doesn't have to be an admin shell). Try the two commands I used above. TLS1.2 one should work -- you'll see a bunch of cert stuff, then "Dovecot Ready" you can at least talk to the auth server from your network. CTRL-C to exit. Type exit to close the Ubuntu window.
If you get nothing, use The Big Hammer! Turn off WiFi on everything else. Close Outlook. Wait 15 minutes, and try wsl again. Still nothing? Then you're kind of stuck and we really need @XfinityCSAEmail email to take a look. You might be stuck anyway if the auth server is there, but it's not doing it's thing. I mention them here, and hopefully they'll see this and pick it up. They're actually pretty good and do really have access to log files.
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