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    Hi!

    We have Exchange server 2016. Whenever I configure outlook by active sync method in Office 2016. It works for few days and starts prompting for password, even if user gives correct password it wont take.

    But if I configure IMAP it works fine. Even Active sync in office 2010 works fine for users.

    Only problem occurs when i configure Active sync in Outlook 2016.

    Kindly suggest.

    Thanks..

    ShabazAhmedRx

    Tuesday, July 7, 2020 9:44 AM

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    Hi ShabazAhmedRx,

    Please test activesync in EXRCA and see if any errors shown.

    It's more likely to be an Outlook issue since Office 2010 working fine, do you have any other App that can connect to Exchange? Test if you get the same issue with these Apps.

    Also, have a look at the ActiveSync directory in IIS and make sure it has basic auth enabled and nothing else. Then in the middle pane, click on 'Http redirects' and make sure it is not redirecting anywhere.

    Then check SSL and ensure Client Certs = ignore.

    Regards, 

    Eric Yin

    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Wednesday, July 8, 2020 5:53 AM
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    Hi,

    I'm here to confirm with you if your issue has been resolved. If the problem is successfully solved, you can share your solution and mark them or the helpful reply as answer, this will make answer searching in the forum easier and be beneficial to other community members as well.

    Regards,

    Eric Yin

    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Monday, July 13, 2020 1:43 AM
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    Hi Eric,

    Thanks for your reply.

    I have changed the settings as per your suggestions. I will observe for few days and revert.

    Thanks and Regards,

    Shabaz

    ShabazAhmedRx

    Tuesday, July 14, 2020 3:08 AM
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    Hi, I'm here to confirm with you if your issue has been resolved. If the problem is successfully solved, you can share your solution and mark them or the helpful reply as answer, this will make answer searching in the forum easier and be beneficial to other community members as well. 

    This Exchange Server 2016 - General Discussion Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Eric Yin

    Exchange Server 2016 - General Discussion forum will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

    For more information, please refer to the sticky post.

    Tuesday, July 21, 2020 7:38 AM
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    Hi Eric,

    Thanks for your reply.

    Issue is not resolved yet. Again few users are facing the issue. Any other suggestions?

    Regards

    ShabazAhmedRx

    Tuesday, July 21, 2020 9:30 AM
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    Hi,

    What would you get when running this command?

    Test-ActiveSyncConnectivity -ClientAccessServer servername -MailboxCredential (Get-Credential pauls@contoso.com)

    This Exchange Server 2016 - General Discussion Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Eric Yin

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    Thursday, July 23, 2020 9:30 AM
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    Hi Eric,

    Thanks for your reply.

    I run the command. 

    I got FAILURE result for scenario PING. Attached file. please suggest

    Regards

    ShabazAhmedRx

    Thursday, July 23, 2020 10:25 AM
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    Hi Eric,

    I Re checked the configuration. As per your suggestions

     1) have a look at the ActiveSync directory in IIS and make sure it has basic auth enabled and nothing else

          Anonymous Authentication is enabled and Basic authentication is disabled. Attached file. Please suggest.

    2)  Http redirects' and make sure it is not redirecting anywhere.

              It's not redirecting anywhere.

    3)   check SSL and ensure Client Certs = ignore.

          Setting is same as you have mentioned.

    Regards

    ShabazAhmedRx

    Thursday, July 23, 2020 10:46 AM
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    Hi Shabaz AhmedRx,

    Does the issue occur with a specific user or with everyone?

    If it's for one user, go to ADUC-Users, find the user and check the property-Account, tick "Do not need Kerberos preauthentification", test with the commands again.

    This Exchange Server 2016 - General Discussion Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Eric Yin

    Exchange Server 2016 - General Discussion forum will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

    For more information, please refer to the sticky post.

    Monday, July 27, 2020 6:15 AM
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    Hi Eric,

    Thanks for your reply.

    This issue occurs for all the users using active sync in Outlook 2016.

    So I am configuring IMAP.

    Regards

    ShabazAhmedRx

    Monday, July 27, 2020 7:05 AM
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    Hi,

    It's suggested to enable Basic authentification.

    How about run the command without "-mailboxcredential"?

    Test-ActiveSyncConnectivity -ClientAccessServer E15MB2

    And could you test configuring Activesync with other Mail APPs? Such as build-in APP named "MAIL" on your device.

    Here is an example:https://support.apple.com/en-au/HT201729

    This Exchange Server 2016 - General Discussion Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Eric Yin

    Exchange Server 2016 - General Discussion forum will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

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    Tuesday, July 28, 2020 7:08 AM
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    Hi Eric,

    Thanks for your reply.

    As per your suggestions, I run the command and got the below error

    [PS] C:\Windows\system32>Test-ActiveSyncConnectivity -ClientAccessServer Exddmail01

    WARNING: Test user 'extest_5ff13cfd67fc4' isn't accessible, so this cmdlet won't be able to test Client Access server connectivity.

    Could not find or sign in with user bdrbnmplf.co.in\extest_5ff13cfd67fc4. If this task is being run without credentials, sign in as a Domain Administrator, and then run Scripts\new-TestCasConnectivityUser.ps1 to verify that the user exists on Mailbox server exdmaidsfl01.brbnmpl.co.in

        + CategoryInfo          : ObjectNotFound: (:) [Test-ActiveSyncConnectivity], CasHealthCouldN...edInfoException

        + FullyQualifiedErrorId : [Server=EXsMdAILs01,RequestId=75e57e82-6620-4b11-889a-ce78b068c58d,TimeStamp=7/29/2020 9:57:47 AM] [FailureCategory=Cmdlet-CasHealthCouldNotLogUserNoDetailedInfoException] 6C0D877C,Microsoft.Exchange.Monitoring.TestMobileSyncConnectivity

        + PSComputerName        : exsdmaidl01.brbdnmpl.co.in


    ShabazAhmedRx


    Wednesday, July 29, 2020 10:07 AM
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    Hi,

    Sorry, I should tell you to create the test user earlier...Here are steps:

    1. Run EMS as administrator

    2. Go to the script folder with following command:

    cd $scripts

    3. Then run the script, enter the password and press Enter:

     .\new-TestCasConnectivityUser.ps1 -OU domain.com/users

    4.  Run the command to test activesync:

    Test-ActiveSyncConnectivity -ClientAccessServer E15MB2

    And could you test his account in EXRCA:https://testconnectivity.microsoft.com/tests/Eas/input

    This Exchange Server 2016 - General Discussion Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Eric Yin

    Exchange Server 2016 - General Discussion forum will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

    For more information, please refer to the sticky post.

    Thursday, July 30, 2020 6:43 AM
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    Hi Eric,

    Thanks for your reply.

    I am not much into scripting.

    I run the command "cd $scripts" to  Go to the script folder and got below error.

    ShabazAhmedRx

    Thursday, July 30, 2020 10:02 AM
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    Hi Eric ,

    I ran this test 

    "EXRCA:https://testconnectivity.microsoft.com/tests/Eas/input"
    and got Connectivity test failed for " use autodiscover to detect server settings"
    and got Connectivity test successful for "manually specify server settings"

    Attached screenshot. Plz suggest

    ShabazAhmedRx

    Thursday, July 30, 2020 11:08 AM
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    Hi,

    I just review this thread and find I misunderstood something. (Sorry for wasting your time doing so many tests)

    You are not talking about configuring Exchange mailbox on mobile device, right?

    Are you setting up those accounts like this?

    If yes, I have to mention that Activesync is used to connect Outlook to the services such as Outlook.com to access email, calendar, contacts, and tasks. Using Exchange ActiveSync to connect Outlook 2013/2016 to an Exchange Server is not supported.

    Please re-create your profile without selecting "Manaully setup" and it will use Autodiscover to connect to Exchange server.

    This Exchange Server 2016 - General Discussion Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Eric Yin

    Exchange Server 2016 - General Discussion forum will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

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    Friday, July 31, 2020 7:42 AM
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    Hi Eric,

    Thanks for your reply.

    I will check and revert.

    ShabazAhmedRx


    Friday, July 31, 2020 7:47 AM
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    [Note] This forum will be locked down, you can continue to post in here before 8/10/2020. It is highly recommended to register the Microsoft Q&A Platform and create new thread in Microsoft Q&A Platform to continue the discussion.

    Hi, I'm here to confirm with you if your issue has been resolved. If the problem is successfully solved, you can share your solution and mark them or the helpful reply as answer, this will make answer searching in the forum easier and be beneficial to other community members as well.

    This Exchange Server 2016 - General Discussion Forum will be migrating to a new home on Microsoft Q&A, please refer to this sticky post for more details.

    Regards,

    Eric Yin

    Exchange Server 2016 - General Discussion forum will be migrating to a new home on Microsoft Q&A! We invite you to post new questions in the new forum.

    For more information, please refer to the sticky post.

    Friday, August 7, 2020 8:56 AM