Hi All, this is my first time and i hope to find a solution : i have 2 Exchange servers in my company and i would like to cancel on of them i moved all mailboxes to server1but any time i try uninstalling the Exchange from Server2 i get this message: The component "Microsoft Exchange Messaging and Collobaration Services" can not be assigned the action" remove" Because: - One or more users currently use a mail box store on this server. these users must be moved to a mailbox store on a different server or be mail disabled before uninstalling this server.... Please advice???

Hello, Check any user's mailboxes are still on your Exchange Server by below two methods. 1. Open ADU&C & do a custom search -> Advance and give below string & see if you can find any users on server. (&(mailnickname=*)(msExchHomeServerName=*YourServerName*)) 2.Oepn ADSIEdit.msc and go to below path. Configuration -> CN=Services -> CN=Microsoft Exchange -> CN=<ORG Name> -> CN=Administrative Groups -> CN= <Admin Group Name> -> CN=<Server Name> -> CN=InformationStore,CN -> CN=<Storage Group Name> -> Check all the mailbox stores one by one like this. Right click on CN=<Mailbox Store> & select properties. Find an attribute homeMDBBL check the value of it. Values shouldnt contain any user mailbox (except SMTP, SystemMailbox & System Attendance) If you are not able to find any users then you can remove the databases manually from Active Directory. Open ADSIEdit.msc and go to below path Configuration -> CN=Services -> CN=Microsoft Exchange -> CN=<ORG Name> -> CN=Administrative Groups -> CN= <Admin Group Name> -> CN=<Server Name> -> CN=InformationStore,CN -> CN=<Storage Group Name> Find the Mailbox Stores name and deleteone by one all, then try to uninstall the server. Still you get the same error then you can manually remove Exchange 2003 from server by following below link. How to remove Exchange Server 2003 from your computer