Hi Guys,

My current version is "Microsoft Exchange Server 2013 RTM" and I would like to upgrade it to CU1. But I could see that this is a major upgrade and it would cause some AD permission changes and schema update. I  also have an RD server and also a SharePoint server connected to the same AD. So, I'm a bit hesitant to do the upgrade an I fear that the permission changes would cause access problems to the users in RD server and SharePoint server.

Could someone shed some light on this? Also, would there be any issues with this CU1 update? Could someone share the steps to perform this upgrade? The Mailserver and ClientAccess roles are configured on the same machine.

Hi Nash Burns,

According to the Exchange Team Blog (http://blogs.technet.com/b/exchange/archive/2013/04/02/released-exchange-server-2013-rtm-cumulative-update-1.aspx), CU1 grants Exchange Servers to make changes on msExchActiveSyncDevices class on inetOrgPerson objects.

Another change in CU1 is about Monitoring Mailboxes.

Before CU1, Monitoring Mailbox are created in default "<domain root>/Users" container. With CU1, Monitoring Mailboxes will be created in the "Exchange System Objects/Monitoring Mailboxes" container.

In my organization, CU1 update didn't change any permissions on my RDS servers.

One question : why don't you apply directely SP1?

• Edited by Sylvain COUDEVILLE 19 hours 29 minutes ago Addentum
• Proposed as answer by Sylvain COUDEVILLE 19 hours 25 minutes ago

Hi Nash Burns,

According to the Exchange Team Blog (http://blogs.technet.com/b/exchange/archive/2013/04/02/released-exchange-server-2013-rtm-cumulative-update-1.aspx), CU1 grants Exchange Servers to make changes on msExchActiveSyncDevices class on inetOrgPerson objects.

Another change in CU1 is about Monitoring Mailboxes.

Before CU1, Monitoring Mailbox are created in default "<domain root>/Users" container. With CU1, Monitoring Mailboxes will be created in the "Exchange System Objects/Monitoring Mailboxes" container.

In my organization, CU1 update didn't change any permissions on my RDS servers.

One question : why don't you apply directely SP1?

• Edited by Sylvain COUDEVILLE Friday, February 06, 2015 4:20 PM Addentum
• Proposed as answer by Sylvain COUDEVILLE Friday, February 06, 2015 4:24 PM