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Migrated Exchange Mailbox to Office 365, setting up outlook locally, prompting for credentials? RRS feed

  • Question

  • I have the following situation..

    I've set up AD Sync with Office 365, no issues that i'm aware of.

    I have a hybrid exchange online setup going on.. no issues so far.. aside from the fact i had to turn smarttls on on our sonicwall antispam device which does sit in the middle (until fully migrated).. i could not get around this for now.. the only issue here is that some external emails sent to migrated o365 boxes get caught in the sonicwall email security spam box.

    All DNS entries local and offsite are still the old method of MX records, autodiscovery.. these ill change after the last mailbox is migrated to point at all O365 dns ones.

    So locally on a windows 10 box.. i have a fresh copy of outlook, i've logged in as the test mailbox user that was migrated.. 

    Auto configuration for the profile fails to find the server.. expected.. so i do manual and choose office 365 and click ok and it works.

    Then suddenly i'm prompted for credentials.. i've tried every combination of credentials i can think of.. both the old way like domain.local\userid and the newer suffix method  like testuser@domain.com and password.. it doesnt take the password... keeps prompting.. is there a way around this either to get it to accept the password or maybe to not prompt at all.

    Thanks in advance


    Tech, the Universe, Everything: http://tech-stew.com Just Plane Crazy http://flight-stew.com

    Thursday, October 19, 2017 4:11 PM

All replies

  • Hi, techfun, did u test your autodiscover and connectivity on Microsoft Analyzer?

    https://testconnectivity.microsoft.com/

    About the prompt, actually offices are with a problem (not resolved by microsoft yet) that he prompts all the time users open an attach, look at that my KB and others bellow and check if is the same issue.

    https://social.technet.microsoft.com/Forums/pt-BR/83d81491-819c-4b8a-a208-016ca035376b/outlook-2013-and-2016-prompt-password-when-users-open-attachements?forum=exchangesvradmin

    https://social.technet.microsoft.com/Forums/office/en-US/594bbea2-2774-4b27-afc0-cc350a688c33/outlook-2016-prompting-for-login-credentials-when-opening-any-email-attachments?forum=outlook

    Thursday, October 19, 2017 4:55 PM
  • Hi, techfun, did u test your autodiscover and connectivity on Microsoft Analyzer?

    https://testconnectivity.microsoft.com/

    About the prompt, actually offices are with a problem (not resolved by microsoft yet) that he prompts all the time users open an attach, look at that my KB and others bellow and check if is the same issue.

    https://social.technet.microsoft.com/Forums/pt-BR/83d81491-819c-4b8a-a208-016ca035376b/outlook-2013-and-2016-prompt-password-when-users-open-attachements?forum=exchangesvradmin

    https://social.technet.microsoft.com/Forums/office/en-US/594bbea2-2774-4b27-afc0-cc350a688c33/outlook-2016-prompting-for-login-credentials-when-opening-any-email-attachments?forum=outlook

    Thanks for the link.. which test makes the most sense to test this exact client mailbox in outlook situation.. would it be the single sign on to office 365 test alone?

    If so its throwing an error there for sure, about the domain not being federated.



    Tech, the Universe, Everything: http://tech-stew.com Just Plane Crazy http://flight-stew.com

    Thursday, October 19, 2017 5:22 PM

  • Reading again, ur problem is just the prompt for password on outlook right? ur autodiscovery are not working because u dont configure all records DNS to O365, so u don`t need this tests, sorry about that.

    I think u are in the same problem I have with outlook update, try to revert office version of one client and test, use this command lines on CMD.

    cd %programfiles%\Common Files\Microsoft Shared\ClickToRun\
    officec2rclient.exe /update user updatetoversion=16.0.8326.21


    Thursday, October 19, 2017 5:39 PM

  • Reading again, ur problem is just the prompt for password on outlook right? ur autodiscovery are not working because u dont configure all records DNS to O365, so u don`t need this tests, sorry about that.

    I think u are in the same problem I have with outlook update, try to revert office version of one client and test, use this command lines on CMD.

    cd %programfiles%\Common Files\Microsoft Shared\ClickToRun\
    officec2rclient.exe /update user updatetoversion=16.0.8326.21


    Yep just getting the client to fully load up after adding the mailbox.. ill try the command and see.

    Tech, the Universe, Everything: http://tech-stew.com Just Plane Crazy http://flight-stew.com

    Thursday, October 19, 2017 6:23 PM

  • Reading again, ur problem is just the prompt for password on outlook right? ur autodiscovery are not working because u dont configure all records DNS to O365, so u don`t need this tests, sorry about that.

    I think u are in the same problem I have with outlook update, try to revert office version of one client and test, use this command lines on CMD.

    cd %programfiles%\Common Files\Microsoft Shared\ClickToRun\
    officec2rclient.exe /update user updatetoversion=16.0.8326.21


    I ran the command, it just says your up to date.. the latest version of office approved by your system admin is installed

    Tech, the Universe, Everything: http://tech-stew.com Just Plane Crazy http://flight-stew.com

    Thursday, October 19, 2017 6:32 PM
  • Something went wrong with command maybe, did u run with administrator privileges?

    https://support.microsoft.com/en-us/help/2770432/how-to-revert-to-an-earlier-version-of-office-2013-or-office-2016-clic

    Look at that KB and try another one, that command line that I sent is for office 2016

    Thursday, October 19, 2017 6:39 PM
  • Something went wrong with command maybe, did u run with administrator privileges?

    https://support.microsoft.com/en-us/help/2770432/how-to-revert-to-an-earlier-version-of-office-2013-or-office-2016-clic

    Look at that KB and try another one, that command line that I sent is for office 2016

    No, I was admin.. the command worked fine.. that was just the result of running it.  Nothing became changed as a result or updated/downgraded.

    Tech, the Universe, Everything: http://tech-stew.com Just Plane Crazy http://flight-stew.com

    Thursday, October 19, 2017 6:49 PM
  • Are you running ofice 2016 or 2013? The command should downgrade to version 8326
    Thursday, October 19, 2017 7:09 PM
  • Are you running ofice 2016 or 2013? The command should downgrade to version 8326

    Its 2016.. specifically as of now:

    16.0.8201.2193


    Tech, the Universe, Everything: http://tech-stew.com Just Plane Crazy http://flight-stew.com

    Thursday, October 19, 2017 7:10 PM
  • This is still a stuck issue for us.. i'm still thinking its something related to the hybrid connector or federation that local users that were migrated cant login/get prompted repeatedly.

    Tech, the Universe, Everything: http://tech-stew.com Just Plane Crazy http://flight-stew.com

    Monday, October 30, 2017 5:58 PM