none
Block Outlook iOS/Android app? RRS feed

  • Question

  • Trying to block a certain group of users from using anything but Outlook on PC or Mac. Want to block Windows 10 mail, iOS/Android native apps, OWA, and Outlook on iOS/Android. I have everything but the Outlook Mobile app figured out.

    is there any option to disabled this?

    Thanks,

    Debendra Desudu

    Tuesday, September 10, 2019 3:43 PM

All replies

  • Hi Desudu Debendra,

    You can disable the protocols below and keep only MAPI enabled which is used by Microsoft Outlook:

    • Post Office Protocol (POP)
    • Internet Message Access Protocol (IMAP)
    • Outlook Web App
    • Microsoft Exchange ActiveSync


    For this, please follow the instructions below either using the EAC or Powershell.

    Using the Exchange Admin Center:

    1. Go to Exchange Admin Center, navigate through "Recipients > Mailboxes"
    2. Find and select the mailbox to disable the protocols and double-click on it to open "Edit User Mailbox" window
    3. Go to "Mailbox features" in the new window
    4. Disable Exchange ActiveSync, OWA for Devices, Outlook on the web, IMAP, and POP3 (keep MAPI enabled)


    Using PowerShell:

    Simply follow the steps in the article linked below to disable POP3, IMAP, Outlook Web App, and Exchange ActiveSync (keep MAPI enabled):
    https://docs.microsoft.com/en-us/exchange/troubleshoot/configure-mailboxes/pop3-imap-owa-activesync-office-365

    Regards,
    Burak V.


    • Edited by Burak VAROL Tuesday, September 10, 2019 6:28 PM spacing
    • Proposed as answer by Bruce Stoker Wednesday, September 11, 2019 4:30 PM
    Tuesday, September 10, 2019 6:27 PM
  • Hi Burak,

    I have tried these all protocol disabled but still accessing mails and configured outlook on handheld devices.

    Thanks,

    Debendra Desudu

    Wednesday, September 11, 2019 7:49 AM
  • Hi Debendra,

    As far as I know, it is not allowed to restrict on the mailbox itself using Set-CASMailbox like other clients.

    To block the Outlook for iOS and Android , we have two options:

    Option 1: Block mobile device access using a conditional access policy
    Option 2: Block Outlook for iOS and Android using Exchange mobile device access rules

    For details, see Blocking Outlook for iOS and Android.

    Regards,

    Manu Meng


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

    Wednesday, September 11, 2019 9:19 AM
    Moderator
  • Hi Manu,

    Thanks for your kind information. 

    Thanks,

    Debendra. 

    Wednesday, September 11, 2019 12:50 PM
  • Hi Desudu Debendra,

    You can disable the protocols below and keep only MAPI enabled which is used by Microsoft Outlook:

    • Post Office Protocol (POP)
    • Internet Message Access Protocol (IMAP)
    • Outlook Web App
    • Microsoft Exchange ActiveSync


    For this, please follow the instructions below either using the EAC or Powershell.

    Using the Exchange Admin Center:

    1. Go to Exchange Admin Center, navigate through "Recipients > Mailboxes"
    2. Find and select the mailbox to disable the protocols and double-click on it to open "Edit User Mailbox" window
    3. Go to "Mailbox features" in the new window
    4. Disable Exchange ActiveSync, OWA for Devices, Outlook on the web, IMAP, and POP3 (keep MAPI enabled)


    Using PowerShell:

    Simply follow the steps in the article linked below to disable POP3, IMAP, Outlook Web App, and Exchange ActiveSync (keep MAPI enabled):
    https://docs.microsoft.com/en-us/exchange/troubleshoot/configure-mailboxes/pop3-imap-owa-activesync-office-365

    Regards,
    Burak V.


    I disabled EAS and it worked like a charm. Users can't access their email from their mobile devices anymore. Thanks!
    Wednesday, September 11, 2019 4:32 PM
  • Hi Bruce,

    Is that you? 

    Desudu Debendra

    Regards,

    Manu Meng


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

    Thursday, September 12, 2019 10:12 AM
    Moderator