a user moved to a different department. I want to move his domain account (SID et al so permissions stay put) and exchange 2000 mailbox to a different . How do I go about doing this? I got following errors when I tried moving mailbox using exchange Move Mailbox: <summary isWarning='false' errorCode='0xc1041721'>The action could not be completed because the Microsoft Exchange Information Store service is unavailable. Be sure the service is running and you have network connectivity to the Microsoft Exchange Server computer. Thanks.