O365 Exchange Not Responding on Port 443 - Microsoft Community

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i'm trying set new installation of outlook connect o365 (e5) mailbox. autodiscover isn't working, turned connectivity analyzer, failed out. of dns records correct (verified manually, using o365 admin, , using connectivity analyzer). resolves fine, exchange not responding https request, , attempt connect via port 443 fails out. full results connectivity analyzer below (the actual username has been replaced "fakename" security when posting here, domain remains correct):

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 (removed moderator protect privacy)

thank in advance,

-patrick

hi patrick,

better you, can provide following information?

1. do other users have same issue?
2. for problematic user, can run following powershell command?

(1) https://technet.microsoft.com/library/jj984289(v=exchg.160).aspx
(2) get-mailbox –identify “email address” | fl

protect privacy, have sent private message collect them. please click on link below access private message:

https://answers.microsoft.com/en-us/privatemessage/inbox

3. do have ad environment?
4. have tried logging outlook web app?

best regards,
erick




Office / Outlook / Other/unknown / Office 365 for business



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