I need to remove/unistall microsoft exchange. I have deleted all associated mailboxes *** *** there are three mailboxes that i cannont delete, and have not exchange task options. - SMPT - system attendant mailbox - system mailbox when i go to add/remove and try to remove exchange, i get the error stating that there are one or more users using the exchange server and they need to be deleted or moved. BUT as i said before there are no available exchange tasks. Why this is so damn difficult is beyond me. all help is greatly appreciated.Net Admin EWTGPAC

Hello, Please follow the links below and i am sure they will really help you out.http://support.microsoft.com/kb/833396http://support.microsoft.com/kb/152959/http://www.msexchange.org/tutorials/Remove-Exchange-server-entire-Exchange-organization.htmlThanks and Hope it HelpsSyed Khairuddin

Hi,Check any user's mailboxes are still on your Exchange Server by below two methods (three mailboxes which you mentioned will be handeled by Exchange server so no need to remove those).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 pathConfiguration -> 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> -> CN=<Database Name>Find theMailbox Storesname 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 computerNote: If it is first Exchange server in your organization then follow the KB152959 as Sayed given.Amit Tank | MVP - Exchange | MCITP:EMA MCSA:M | http://ExchangeShare.WordPress.com