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Outlook.com IMAP server error 9

  • 5 replies
  • 5 have this problem
  • 1 view
  • Last reply by christ1

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I have Outlook.com configured in Thunderbird as IMAP. The initial setup woks fine and I have several thousand messages in my inbox but every time I go back to retrieve new messages, I get: "Error 9. Server error. Please try again later." message. Any other folders other than Inbox such as Sent, Deleted, or Junk work fine. The issue only happens with Inbox. I have contacted Microsoft already and they are saying this is a Thunderbird issue because no other IMAP client sees this issue with Outlook.com.

Please help.

Thanks, AK

I have Outlook.com configured in Thunderbird as IMAP. The initial setup woks fine and I have several thousand messages in my inbox but every time I go back to retrieve new messages, I get: "Error 9. Server error. Please try again later." message. Any other folders other than Inbox such as Sent, Deleted, or Junk work fine. The issue only happens with Inbox. I have contacted Microsoft already and they are saying this is a Thunderbird issue because no other IMAP client sees this issue with Outlook.com. Please help. Thanks, AK

All Replies (5)

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Microsoft reproduced the same issue and after several days of troubleshooting concluded that the issue is with Thunderbird even though it says server error 9. It was confirmed after I installed Opera Mail and Mailbird and both cases Outlook.com IMAP worked flawlessly. There has to be something different about Thunderbird.

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There was a reason I linked the MS support thread above. Please read it.

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I have read the article but it is not helping me. I guess I am not seeing what you are trying to get me to see. There does not seem to be a resolution in the article. BTW: I do not have a large folder. I have around 2000 messages in my Inbox. Someone mentioned being able to reproduce the issue with OpenSSL and it may very well be a Microsoft issue. I am just trying to reason with the fact that I can use Opera and Mailbird without any problems and so they must have done something to get around the issue that Thunderbird is experiencing with Outlook.com IMAP service.

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I'm not using Outlook.com, and I can't offer a solution either. What I understand from the article is that the issue is with Microsoft, and not specific to Thunderbird. As a workaround I'd reduce the number of messages in your Inbox. Also see http://kb.mozillazine.org/Keep_it_working_-_Thunderbird

In addition make sure not to let your anti-virus software scan your Thunderbird profile folder. And don't let it scan incoming and outgoing messages or attachments.

Modified by christ1