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Exchange 2013 Cumulative Updates - help please

Posted on 2014-10-23
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Last Modified: 2014-10-23
Hi All,
Would be great if you could help please: My company setup is:
DC Server 2012
Exchange 2013 on Server 2012 – this had an update to CU3 in May

Im looking to upgrade this to either CU5 or CU6 – can this firstly be done from a previous update? Which CU shall I upgrade to if it can be done?

My dcdiag and repadmin /syncall – is all passed and no errors.

Would I then run below on the DC server?

setup.exe /PrepareSchema /IAcceptExchangeServerLicenseTerms
setup.exe /PrepareAD /IAcceptExchangeServerLicenseTerms


Once this is above is done  – do I need to dismount the database in the Exchange Console? Then run the setup.exe from the Exchange server?

Help would be much appreciated
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Question by:jag b
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Accepted Solution

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Ganesh Kumar A earned 500 total points
ID: 40399488
Perform AD Schema and Domain Preparation for Exchange 2013 CU5 using the following step-by-step instructions

1) If you haven’t having latest version already, download the latest version of Exchange 2013.
2) Next, verify AD health by running DCDIAG and REPADMIN /SYNCALL from a run-as-administrator command prompt on your DC’s.  If issues are found here is a good starting point to troubleshoot active directory.
3) Copy the download to an easily accessed folder on the hard drive of one of your domain controllers (C:\Exch2013CU5\download).  Run the downloaded file in order to extract the installation files, place them in c:\Exch2013CU5

4) open a command prompt as administrator on the DC and prepare the AD schema using the following command from a ‘run-as-administrator’ command prompt:
setup.exe /PrepareSchema /IAcceptExchangeServerLicenseTerms
setup-prepareschema Note: your account must be a member of Schema Admins

5) Once the schema upgrade is complete, run ‘repadmin /showreps’  from the command prompt to make sure AD replication has completed and any schema mismatch errors have gone away (they will eventually go away on their own).  I also recommend running DCDIAG again to make sure it passes before moving on.

6) Prepare AD by running the following command from a ‘run-as-administrator’ command prompt:
setup.exe /PrepareAD /IAcceptExchangeServerLicenseTerms
setup preparead

7) Repeat the AD health checks outlined in Step 5 again, again it may take awhile for the schema mismatch error to go away (this error is normal).

8) If you are installing Exchange 2013 for the first time in your environment, here discussed about Exchange 2013 CU5 update issues.
http://blogs.technet.com/b/mspfe/archive/2014/06/11/exchange-server-2013-cu5-installation-issue.aspx
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Author Comment

by:jag b
ID: 40399536
Hi - I have seen above however does not answer my quesitons
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Author Comment

by:jag b
ID: 40399551
Im looking to upgrade this to either CU5 or CU6 – can this firstly be done from a previous update? Which CU shall I upgrade to if it can be done?
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Expert Comment

by:Ganesh Kumar A
ID: 40399589
Upgrading from a previous release of Exchange 2013 to Exchange 2013 CU5 is not different than upgrading from to Exchange 2013 CU3.  I recommend to go for CU5, since CU6 is having issues while installing it on hybrid environment and co-existence environment.

You no need to dismount the database while deploying CU5, it automatically upgrades and does if required. Anyway you will have to restart once after deployment would be sufficient enough.

Few tips for upgrade to CU5:

If you have any UM Language packs installed you have to remove these first before upgrading to Exchange 2013 CU5. To do this you have to use the unattended setup:

setup.exe /RemoveUMLanguagePack: <UmLanguagePackName>
Once removed you can continue upgrading to CU5.

If you have multiple OAB Generation Mailboxes deployed in your organization you have to upgrade the Exchange 2013 Client Access servers first.

If you have multiple Exchange 2013 servers in a DAG, you have to put the DAG member that will be upgraded in maintenance mode first. In maintenance mode all active copies of the Mailbox databases will be moved off of the server and the possibility of moving back will be blocked. Also the Primary Active Manager (PAM) is running on this server will be moved to another DAG member.

The process is as follows:

Put a DAG member in maintenance mode.
Install the Cumulative Update.
Take the DAG member out of maintenance mode.
Redistribute the active Mailbox databases across the DAG.

Hope this helps
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Author Comment

by:jag b
ID: 40399623
Is there a big difference from CU3 to CU5?
can I just dismount the database and carry on with the CU5?  or do I have to put it in a certain way eg: maintenance mode
I don't think I have UM Language Packs - any way I can confirm this?
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Expert Comment

by:Ganesh Kumar A
ID: 40399772
Why you want to dismount the database and update? Instead use maintenance mode.  Basically you dont need to dismount the database for CU5. If you have multiple Exchange 2013 servers in a DAG, you have to put the DAG member that will be upgraded in maintenance mode first. In maintenance mode all active copies of the Mailbox databases will be moved off of the server and the possibility of moving back will be blocked. Also the Primary Active Manager (PAM) is running on this server will be moved to another DAG member.

The process is as follows:

Put a DAG member in maintenance mode.
Install the Cumulative Update.
Take the DAG member out of maintenance mode.
Redistribute the active Mailbox databases across the DAG.

There are enhancements,  CU5 update resolves the issues that are described in the following Microsoft Knowledge Base (KB) articles:
KB2963590 Message routing latency if IPv6 is enabled in Exchange Server 2013
KB2963566 Outlook Web App accessibility improvement for UI appearance in Exchange Server 2013
KB2962439 You cannot sync contacts or tasks in Microsoft CRM client for Outlook in an Exchange Server 2013 environment
KB2962435 CRM synchronization fails if the time zone name of a meeting is not set in an Exchange Server 2013 environment
KB2962434 Slow performance in Outlook Web App when Lync is integrated with Exchange Server 2013
KB2958430 "Some or all Identity references could not be translated" error when you manage DAG in Exchange Server 2013 SP1 in a disjoint namespace domain
KB2957592 IME is disabled in Outlook Web App when you press Tab to move the focus in an email message in Exchange Server 2013
KB2942609 Exchange ActiveSync proxy does not work from Exchange Server 2013 to Exchange Server 2007
KB2941221 EWS integration for Lync works incorrectly in an Exchange Server 2013 and 2007 coexistence environment
KB2926742 Plain-text message body is cleared when writing in Outlook Web App by using Internet Explorer 8 in Exchange Server 2013

KB2926308 Sender's email address is broken after importing a PST file into an Exchange Server 2013 mailbox
KB2925559 Users always get the FBA page when they access OWA or ECP in Exchange Server 2013
KB2924519 "SyncHealth\Hub" folder is created unexpectedly after installing Cumulative Update 2 for Exchange Server 2013
KB2916113 Cannot open .tif files from email messages by using Windows-based applications in an Exchange Server 2013 environment
KB2592398 Email messages in the Sent Items folder have the same PR_INTERNET_MESSAGE_ID property in an Exchange Server 2010 environment
KB2938292 Default apps in Outlook Web App do not work if Exchange is installed in Window Server 2012 R2
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Author Comment

by:jag b
ID: 40399787
sorry im new to exchange 2013.
I only have one exchange server 2013 running on server 2012 and one dc server 2012
have you got instructions how to put exchange into maintenance mode?
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Expert Comment

by:Ganesh Kumar A
ID: 40399806
If you have DAG enabled then you need to put into maintenance mode. If you dont have DAG then dont dismount just perform the procedure to install CU5.

Before performing any changes, ensure you take full backup of your exchange database and keep it handy.

To put a DAG member in Maintenance Mode open the Exchange Management Shell, navigate to the
$Exscripts directory and enter the StartDAGServerMaintenance.ps1 -Server <<servername>> command.

Now install the CU5 binaries as explained before. Once installed the DAG member can be taken out of Maintenance Mode. Open the Exchange Management Shell and enter the StopDAGServerMaintenance.ps1 -Server <<servername>> command from the $Exscripts directory.

The last step is to redistribute the Mailbox database across the DAG. You can use the RedistributeActiveDatabases.ps1 script in the $Exscripts directory to do this, but i dont think so you need this last step.
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Author Comment

by:jag b
ID: 40399821
Thank you - I don't have dag enabled, shall I still run the DC and prepare the AD schema ?
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Expert Comment

by:Ganesh Kumar A
ID: 40399842
Yes you should
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Author Closing Comment

by:jag b
ID: 40399847
excellent
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