• Upgrade to 24H2 breaks Outlook (classic) Yahoo IMAP

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    • This topic has 2 replies, 2 voices, and was last updated 1 month ago.
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    #2742363

    My home PC, which ran Windows 11 Pro, 23H2, is very plain vanilla as far as installed applications go, so, for better or worse, I do not worry about updates from Microsoft. I did try to hide the ‘upgrade’ to 24H2, but in vain, as it was installed “for” me a few days ago. The only fallout thus far was that Microsoft Outlook 2019 refused to get my mail.

    In March of 2014, Cox Cable sold off their email service to Yahoo. While I kept my old Cox email address, I now had to switch from Cox’s IMAP to Yahoo’s IMAP service. This worked fine until my forced upgrade. Now Outlook (Classic) will not connect to Yahoo, saying, usefully that “something went wrong”. By chance I found out from a friend that Outlook (New) would work. I tried this, and it is true, but I am not a fan of the new interface.

    So I continued my quest for the answer. After hours of fruitless searching, I found a note from Microsoft, which had the error message I was getting, but, as I am an application programmer in C and not a network person, I was unsure if this note applied to my situation. The article suggested adding three registry keys, to modify the behavior of Outlook’s Autodiscovery process.

    So, desperate, with nothing to lose, I added:

    KEY: Computer\HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover

    DWORD: ExcludeLastKnownGoodUrl
    VALUE: 1

    DWORD: ExcludeHttpsRootDomain
    VALUE: 1

    DWORD: ExcludeSrvRecord
    VALUE: 1

    and restarted ‘Outlook (Classic)’.

    I then went to Outlook’s ‘File/Account Settings/Account Settings…’. I selected ‘Repair’, then fixed both the URLs for IMAP and SMTP. When done, instead of telling me ‘Something went wrong…’, it said ‘Done’.

    I could then receive and send email. Yay!

    Moderator’s Note: Edited the “KEY” path format so that the whole thing can be seen in the post. It was showing as cut off at the end of the path, so unable to see the entire path.

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    • #2758774

      I was so glad to find your post because I am having the same problem and can find no solution. I am so computer expert, but I followed the instructions to add the D words you suggested, restarted outlook and tried to repair but got the same error. I can’t even get past the initial repair page to change URLs because the error is immediate. Would be eternally grateful if you had any suggestions. Thankyou!

      • #2758968

        First, check that you have set the registry values correctly.
        Open a CMD prompt and run the following command, then post the results here.
        1. Open CMD: Win R cmd Enter
        2. Paste this text and press Enter: reg query HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover

        Use the instructions in this post to create a new profile. Then you may be able to setup the mail in the new profile.

        cheers, Paul

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