After latest Outlook 15.11 update: POP email account - An unknown error has occurred

I just updated last night to the latest beta of Outlook (15.11 150609) via the Microsoft auto update,

and 2 of my 5 pop accounts won't sync anymore and come up with an error.

An unknown error has occurred in Outlook.
Could not retrieve mail.
Error code: -1

Doing some testing,  when I redo those accounts as imap instead of POP they do work.

Also, when comparing the settings of those 2 to my other POP accounts, they are setup the same way.
incoming (no SSL, port 110)

outgoing (no SSL, use incoming server authentication, override fault port to 587)

Those 2 accounts are hosted on a Eudora Mac-based EIMS Server, and from their client config instructions "use Challenge-Response MD5 authentication".
So I am not sure if it has something to do with that, as they did work before the latest update.

Any insight would help!

 

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Last updated May 3, 2020 Views 758 Applies to:

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You can create a new profile and see if that helps. Under Applications right click on Microsoft Outlook and show package contents. Go ot Applications -> Microsoft Outlook -> SharedSupport ->Outlook Profile Manager.

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Similar problem.  I get a "connection to server failed or was dropped" error.  This only happens on one of my accounts. 2 others work fine and are set up exactly the same way.

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You can create a new profile and see if that helps. Under Applications right click on Microsoft Outlook and show package contents. Go ot Applications -> Microsoft Outlook -> SharedSupport ->Outlook Profile Manager.

This does not help. The same two accounts are giving the error message "Connection to the Server failed or was dropped" The error code for me is -3253.

These are the only two of my accounts that use a GoDaddy server. 

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We are having the exact same issue across all our GoDaddy accounts. Please resolve this immediately.

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I'm having exactly the same problem.  Creating a new account seemed to improve things a bit but only a bit. Restarting Outlook clears the problem (until the next time) BUT sometimes Outlook will only close with a forced quit.

This need rapid resolution.

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I am having same problem with only my Godaddy accounts. All others work fine. 
Hy there

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I have the exact same problem and, like you, ONLY with GoDaddy email accounts. I called GoDaddy to no avail. They insist that it's the new Outlook update at fault. Very frustrating. Can't find a resolution anywhere. 

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I have problems with some our imap accounts. It fails to connect with the server. I changed the port from 465 to 25 on the outgoing server and that seemed to work. 

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I am having the same problem with only my Godaddy accounts. All others work fine.  I can retrieve mail from my GoDaddy accounts on other devices. It is an Outlook problem. Started right after I installed the update 15.11 (150609)

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You can create a new profile and see if that helps. Under Applications right click on Microsoft Outlook and show package contents. Go ot Applications -> Microsoft Outlook -> SharedSupport ->Outlook Profile Manager.

This does not help. The same two accounts are giving the error message "Connection to the Server failed or was dropped" The error code for me is -3253.

These are the only two of my accounts that use a GoDaddy server. 

I've had the same error -3253 problem whenever I attempt to respond to an email from my iCloud account. The problem started with the most recent Outlook for Mac update.

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