Avatar of Doug Penneman
Doug Penneman
Flag for United States of America asked on

Can't uninstall Exchange 2010 with Offline address books

I'm finally getting around to getting rid of my 2010 after moving everything to 2016. The error is "This server is responsible for generating an offline address book. Removal is not permitted"  It seems since I have multiple GALs, Address lists, Address book policies and OABs that its a challenge. I thought I could just delete them all and re-create on the new server but it won't let me delete. Each one says it's being used by the other, this and that, etc. It's a vicious circle.  I still need all the address list and OABs for multi-tenant seperation. What do I need to do?

Avatar of undefined
Last Comment
Peter Hutchison

8/22/2022 - Mon
Peter Hutchison

No, do not delete, them  Logon to new the Exchange 2016 ECP page and move the OAB roles over to the new server, so that they generate the OABs instead of the Exchange 2010 servers.

See https://docs.microsoft.com/en-us/Exchange/email-addresses-and-address-books/offline-address-books/oab-procedures?view=exchserver-2019#use-the-exchange-management-shell-to-change-the-organization-mailbox-thats-responsible-for-generating-an-offline-address-book
Doug Penneman

You say "ECP" but the article does not show how to do it. When I try to use the EMS command it says that GeneratingMailbox can only be used on 2012 or newer OAB. Can I get more detail on what you mean?
Doug Penneman

View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
Saif Shaikh

we can directly delete it via ADSIEDIT:

The location should be:   first organization -> CN=Address Lists Container -> CN=Offline Address Book

If you are decommissioing the 2010 server. Will not harm and you will be able to uninstall exchange 2010 gracefully from control panel.

Experts Exchange has (a) saved my job multiple times, (b) saved me hours, days, and even weeks of work, and often (c) makes me look like a superhero! This place is MAGIC!
Walt Forbes
Doug Penneman

Thanks guys. I knew about the ADSIedit option but I wasn't sure that it would not orphan the OABs.
Peter Hutchison

ECP is the Exchange Control Panel available via the web on Exchange 2013 or later e.g. https://mail.domain.com/ecp/

Using ADSI is a good alternative to using the EMC console or Powershell if they do not work.