I'm running a predominantly Windows 2000 office with Exchange 2000, Windows 2000 Pro / XP Pro in the office and have been getting a synch problem with the guys running Office 2003 in cached mode on laptops. Here's an example of the error report: 13:51:29 Synchronizer Version 11.0.5604 13:51:29 Synchronizing Mailbox 'Ben Duckworth' 13:51:29 Done 13:51:29 Microsoft Exchange offline address book 13:51:29 0X8004010F Has anyone else run across this and know of a fix? I've had a look over the MS knowledge base but haven't come across anything that works yet. I've had to resort to importing the OAB into the local contacts, but would rather get the problem kicked. Thanks, folks. Regards Tim Sutton IT Systems Manager Troup Bywaters & Anders Eastgate House 10 Eastgate LEEDS LS2 7JL Tel: 01132432241 Fax: 01132424024 E-mail: t.sutton@xxxxxxxxxx Privilege and Confidentiality Notice This email and any attachments to it are intended only for the party to whom they are addressed. They may contain privileged and/or confidential information. If you have received this transmission in error. please notify the sender immediately and delete any digital copies and destroy any paper copies. Thank you.