Exchange 2007 SP2 / Outlook 2007 SP2.All servers are running Win 2008 Enterprise.All servers/clients are members of out domain.This is not an error of generating the OAB-folders but regarding access to it.When hitting Send/recieve the progress freezes and nothing happens.The only way to solve is to browse to the oab folder on our CAS and add a file permissions for the group "Everyone" with the right "read", then its working. The problem however seems to keep coming back.Anyone?

Go to the OAB folder, open the folder within with a GUID value and check for some files over there. If you can see the files, it means , its getting generated. also check if yoc see the same folder on the CAS servers also.Also try to check by forcefully doanloading it tools-->send and recieve-->doanload address book.Check for the errors in sync folder and post it here.Raj

Go to the OAB folder, open the folder within with a GUID value and check for some files over there. If you can see the files, it means , its getting generated. also check if yoc see the same folder on the CAS servers also.Also try to check by forcefully doanloading it tools-->send and recieve-->doanload address book.Check for the errors in sync folder and post it here. Raj I might have been a bit unclear, but the OAB-folder has been correctly generated and is located where it should, both in the IIS-structure and on our two CAS-servers. And I've tried to manually download the addresslist though send/recieve droplist>offline adressbook.edit: Any suggestions on where I should look for those err's?

When you start downloading the OAB, on the right hand corner , click on send and recieve and go to details and then click on errors tab. Possibility is there , that you can get some very specfic errors.Raj

Check info: 1. Quote: “The problem however seems to keep coming back” How did the problem come back? 2. Please go to “Sync issue” folder (Click the “Folder List” button in the left-below corner of outlook, it will show all folders under mailbox including “Sync issue”) in the outlook, check error 3. Does the “Authenticated Users” group have the Read permission on the subfolders of the OAB folder? 4. Please try to remove the subfolders under the OAB folder, and then restart the FDS service in order to force the OAB download on the CAS server 5. Is there any error event in the application log on the exchange servers? 6. Please run the ExBPA against the exchange servers for health check Resources: How Exchange 2007 OAB Files are replicated to a Client Access Server for download How Offline Address Book Works In Exchange 2007