Running Exchange 5.5 SP4 on Win2K server. When our laptop users try to download the offline address book, they get a "Microsoft Exchange Server reported error 0x80004005; The operation failed. I tried doing a search on the error, nothing that applied to the offline address book. Can someone provide some insight how to track down this problem? Our glory is not in never falling, but rising every time we fall. Paul Maglinger, A+, CA, CCA, CET, MCSE Systems Administrator Shoe Carnival Inc. (812)867-4674 pmaglinger@xxxxxxxx