Help: Workflow Application Failed after apply Exchange2k post sp3

This is a discussion on Help: Workflow Application Failed after apply Exchange2k post sp3 within the Microsoft Exchange forums in Microsoft Tools category; Hi My company is running Annual leave workflow application develope by using workflow engine. However when we apply the Exchange POST SP3 on our exchange 2000. The workflow cannot run. I have the following error message in my event log Workflow event sink error [event: OnSyncSave, URL: <>]: Unable to initialize IExStoreEventInfo object, possibly due to URL generation failure. Please help Thanks Raymond...