You can receive the following error (0x80190194) in Outlook when trying to download a Web Distribution only enabled Offline Address Book. The error 0x80190194 is an HTTP 404 error:
C:\WINDOWS\system32>err 0x80190194# for hex 0x80190194 / decimal -2145844844BG_E_HTTP_ERROR_404 bitsmsg.h# 1 matches found for "0x80190194"
The reason for this error message is that when an Outlook 2007 client downloads the OAB files they are not being found on the Client Access Server.
Here is the flow for downloading the OAB:
Now, the Default OAB Web Site on the Client Access Server will have a local directory associated with it that has the path of: <Drive Letter>:\Program Files\Microsoft\Exchange Server\ClientAccess\OAB. This is the location for the OAB files when they are copied over from the Mailbox server by the FDS (File Distribution Service).
If you are in a single server site these OAB files should be copied over immediately to this directory after the OAB has been generated. If you have a multi-server site where your Client Access Server that is separate from your Mailbox server that is generating the OAB, the OAB files will be copied over under a few situations (not all are listed here):
One way to tell if your OAB files have been replicated to the Default OAB Web Site is to look for the event id 1008 in the application log. This event will be logged by the FDS (File Distribution Service) on the Client Access Server.
Event Type: InformationEvent Source: MSExchangeFDSEvent Category: FileReplication Event ID: 1008Date: 11/28/2006Time: 1:55:46 PMUser: N/AComputer: OABServerDescription:Process MSExchangeFDS.exe (PID=2484). Offline Address Book data synchronization task has completed successfully. OAB name: "Default Offline Address Book", Guid: edb3e44f-c49b-4597-b996-cb1093405985
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
If the OAB files are missing you will need to find out why the FDS service is not replicating them.
Workaround 2 - This is just a workaround ONLY until you get the FDS replication fixed
Once the files have been replicated to this directory the Outlook client will be able to download them and you will not receive this error.
I am in a test environment and am getting this sync error on my O2K7 clients. My 1008 events say the FDS was successful, however, my \clientaccess\oab is still empty. I've check the info in Vladmir's blog as well and all appears correct.
Any ideas on why the 1008 would say it's ok but still have nothing in my oab folder?
If FDS states that it has replicated the files they should be there. If you want to run a test to see if anything else is going on you can do the following:
1. Delete all of the OAB folders in the distrubition point.
2. Open both directories for the OAB and \Client Access\OAB
3. Change the polling interval to 2 minutes (this will speed up the test). Run Get-OabVirtualDirectory| Set-OabVirtualDirectory -pollinterval 2. (You will want to change this back after).
4. Rebuild your OAB and then watch to see if the folder gets replicated over.
What build of Exchange 2007 are you running?
Well, I let the box sit for another 24 hours, and now everything appears to be working properly. The folders now exist in the \ClietnAccess\OAB directory, and I do not get the sync error on my client anymore.
I thought 24 hours would be long enough for everything to sync up, but it wanted a bit longer on this one for some reason.