How to deploy the .oab and .ost files for use with Outlook 2003 in Cached Mode Exchange

Outlook 2003 introduces Cached Exchange Mode. Cached Exchange Mode lets you work primarily from offline files in a Connected mode and to periodically synchronize with an Exchange Server. Using Outlook 2003 in Cached Exchange Mode is useful when users are located at remote sites or are working over slow or unreliable connections. By default, all…

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Outlook client fails to download the OAB with error 0x8004011B

Earlier today I saw a post on one of the aliases where a customer was having issues downloading the OAB with their Outlook 2003 clients. The Outlook client was failing with the error code of 0x8004011B. I asked a few questions in regards to the customers exchange environment, and I found out that they have an Exchange 2003 /…

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Generating a newly created Offline Address Book fails with Event ID’s 9331 and 9335

There is one situation that can cause a newly created Offline Address List to fail when being generated, and this is when the root OAB folder has not been created in the Exchange information store. By default Offline Address Lists reside in two locations: In the Address List Container in the domain controllers configuration partition In the…

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Exchange 2000 Server and full OAB downloads due to invalid legacyExchangeDN’s

As we know the PDN issues cause massive problems and contribute full OAB downloads. Recently I just worked an issue for two large global customers that were receiving Event ID 27’s for Mod diff failures, however the Event ID 27’s were not indicating signature mismatches. A signature mismatch will cause Outlook clients to fail when applying the OAB differential files because…

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