Trying to remove a exchange 2003 and  can not go through control panel.

It says :

One or more users currently use a mailbox store on this server. There users must be moved to a mailbox store on a different server or be mail disabled before uninstalling this server.


Go to Active directory User and Computers,

Find -> Custom Search

Type in


You find several users.


Use View-> Choose Columns -> Published at-> OK to find where are these users.

Now useAdsiedit.msc to find each of them and change the field :

MsEcchHomeServerName to the new server. 

After finish all this, close the installation wizard panel and go to Control panel and do it again. You can remove it now.


About Lei

I am an IT specialist with over 10 year experience - years on Automation, on-Premise or Azure.

I am happy to develop however never want be a full time developer. Only do what I have to do. If it has to be PowerShell,HTML, PHP, CSS, C#, VBS or JS, front end or backend, so be it, doesn't matter!

Spent years with Windows, SCCM, SharePoint, SQL and Exchange servers. For last several years, I have been actively working under On Premise > Azure environment.


Current Certificates:
    Microsoft® Certified-
  • -Enterprise Administrator
  • -Database Administrator
  • -SharePoint Administrator
  • -Administering and Deploying SCCM 2012
Red Hat Certified Technician
ITIL V3 Foundation - Practitioner

Working on Azure Certificates now and hopefully they can stop upgrading their questions one day! GIVE ME A BREAK!

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