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Exchange 2010: OAB download error 80190194

Recently I was working on the issue but could not find the solution anywhere so sharing this simple solution.

Issue: Unable to download OAB and getting the following error in outlook. ! Task ’email’ reported error (0x80190194) : ‘The operation failed.’



-Check the bitsadmin by running the following command.

bitsadmin /list /verbose

ERROR FILE: -> C:UsersPrabhatAppDataLocalMicrosoftOutlookoab2.xml

ERROR CODE: 0x801901f4 – HTTP status 500: An unexpected condition prevented the server from fulfilling the request.

ERROR CONTEXT: 0x00000005 – The error occurred while the remote file was being processed.

DESCRIPTION: Microsoft Outlook Offline Address Book Directory JOB

FILES: 0 / UNKNOWN WORKING -> C:UsersPrabhatAppDataLocalMicrosoftOutlookoab2.xml -Search the error 0x801901f4 over internet.

-Checked the configuration. -Restarted the FDS, SA and Bits services but no luck.

-Checked the authenticated users permission at the below locations but no luck

C:Program FilesMicrosoftExchange ServerV14ExchangeOAB

C:Program FilesMicrosoftExchange ServerV14 >client access > OAB

-Ran the below command but no luck.

            Set-OabVirtualDirectory OAB* -BasicAuthentication $True

            Get-OfflineAddressBook | Update-OfflineAddressBook

            Update-FileDistributionService -Identity <insert server name> -Type “OAB” 

Tested outlook 2010 and 2013

-Tested different laptops.

-Tested different database.


Resolution: On all the exchange server performed the below steps:

  1. Open the IIS Manager
  2. Expand it to Default web site à OAB

  3. Right click edit permissions and go to Security tab

  4. Added authenticated users with Read & Execute, List folder contents and Read.

  5. Clicked apply, ok then ok.
  6. On the command prompt ran the IISReset.


This fixed my issue and OAB started downloading.


Conclusion: Even if we have permission on the file and folder level, we might still need to configure the permissions in IIS Manager.





Prabhat Nigam

Microsoft Solution Architect | Exchange Server


31 Responses to “Exchange 2010: OAB download error 80190194”

  1. gallaso Says:

    Thanks Prabhat! This solved the issue I had on the with OAB. It was weird becuase not everyone was affected by it. It now resolved. Great post!

  2. NK Says:


    We added authenticated users with Read & Execute, List folder contents and Read and did IISreset Still we get the same error message. What else we can try.


  3. Prabhat Nigam Says:

    Hey NK,
    error 80190194 can come for different other issues as well, could you share your error.

  4. Chris Says:

    I got this error “reported error (0x801901F4)” Please help.


  5. Sayed Says:

    Very Nice Guru 🙂

  6. Igor Says:

    I have same issue like Chris “reported error 0x801901F4 opreation failed” Can you help me?

  7. Prabhat Nigam Says:

    Is it in the outlook on send and receive? what is the outlook and exchange version?
    Are you using Mapi or Outlook anywhere?

  8. Igor Says:

    I have Exchange 2013 CU8 and all clients are outlook 2010 pro. The problem is that my clients can’t download address book from their outlook, and I just got 0x801901F4 error. I have new user in AD with new e-mail. User can be seen over OWA and without cashed mode outlook. After I recreate outlook profile the user is in the GAL but he still receive same error when he try to download address book. (with cashed mode)…

  9. Prabhat Nigam Says:

    New user will take 24hrs to be in the oab. If the issue is only with new user then wait for 24hrs and it will be fine.
    Other option is to force oab but restarting services.

  10. Igor Says:

    I already restarted the services, but no success. Btw the user is created 4 days ago :@ IT must be some solution, otherwise I need to recreate all outlook clients to get the latest GAL. But in that case there will be the same issue ( 0x801901F4 )

  11. Igor Says:

    Hi Again! Is it painful to create new OAB for exchange 2013 and if someone can give me instructions for that.. OAB in exchange 2013 is not working the same way like exchange 2007/2010..

  12. Prabhat Nigam Says:

    On the database properties check which OAB is configured. In 2013 OAB is part of a arbitration mailbox which should not be deleted.
    You can also try the following command
    Get-offlineaddressbook | Update-offlineaddressbook

    If you need to create new OAB then it is a simple command which will take few minutes. check the command here –

  13. Umporn-THA Says:

    Thank so much.
    I found the same problem and now solved.

  14. Mike Says:

    Thanks! This worked!!!

  15. Igor Says:

    Thanks a Lot, I sort it out with recreate the OAB, but now I have another issue. When my problem with oab was resolved 3 weeks ago users complain about outlook popup warning for password. When they type username and password the issue is gone, but it will appear after 4 or 5 days and getting start annoying. Maybe this issue is coused by network interruptions or by OAB authentication but is there any resolution for this issue?! Maybe my question is off topic but I have trouble with this one. Thanks in advance!

  16. Prabhat Nigam Says:

    If they login to the domain and you have windows integrated (ntlm) then we should be good.

  17. Igor Says:

    They have NTLM athentication for the users outlook but with no difference if they are in the organization or access with “outlook anywhere” they still have popup issues. Maybe I should check the URL authentication. Do you know what authentication type do I need to set for all virtual directories in IIS (like best practices)? All External URL need to be basic and internal NTLM maybe?

  18. vinay Says:


    I am getting below error for almost all the user in my org (6000 users).

    Task ‘Email address’ reported error (0x80190193) : ‘The operation failed.’

    Kindly help me, Thanks in advance.

  19. lina0 Says:


    I am seeing same issue and I have tried everything in most all Microsoft tech notes, but still receiving error message while downloading offline Address book “Task ‘Outlook’ reported error (0x801901F4): The operation failed.” We have new users who are not showing in the Global Address List. We are running Exchange 2010. Please help.


  20. Prabhat Nigam Says:

    wait for 24hrs, you will be good.

  21. Prabhat Nigam Says:

    This should fix the issue –

  22. lina0 Says:

    Thank you for your response.. Sorry.. I am still receiving same error message while downloading offline address book. We are running Exchange 2010. Besides me some users are not able to see updated information in the Global Address List & some are able to see.


  23. Prabhat Nigam Says:

    Run the following commands to verify all good with address books and update them.
    Get-globaladdresslist | update-globaladdresslist
    Get-Offlineaddressbook | update-offlineaddressbook

  24. lina0 Says:


    I am still receiving same error message while downloading Offline Address List after 2 days. “Task ‘Outlook’ reported error (0x801901F4): The operation failed.” And Global Address list is not updating.. Please help..

    Thanks in advance.

  25. Prabhat Nigam Says:

    Then there is something other than the permissions. It can be proxy or network or DNS or client firewall

  26. lina0 Says:

    Thank you. I will give it a try again after disabling windows firewall.

  27. lina0 Says:

    Thanks.. I am not receiving error message now.. But I still don’t see updated information in the Global Address List.

  28. lina0 Says:

    New users show only we I disable cache mode in advanced settings. They are still not showing up in Offline Address Book.


  29. Prabhat Says:

    How many users?
    Create new OAB.

  30. Jacsun Says:

    I applied this exact fix, and seems to work. But after restarting the server the permission is gone. Can you explain why or how to get the permission to keep?

  31. Prabhat Nigam Says:

    It must be inheritance issue which you need to fix.

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