Exchange 2013 CU15 Released


Exchange 2013 CU15 has been released to the Microsoft download centre!  Exchange 2013 has a different servicing strategy than Exchange 2007/2010 and utilises Cumulative Updates (CUs) rather than the Rollup Updates (RU/UR) which were used previously.    CUs are a complete installation of Exchange 2013 and can be used to install a fresh server or to update a previously installed one.  Exchange 2013 SP1 was in effect CU4, and CU15 is the eleventh post SP1 release.  How time flies…..

Exchange 2013 CU15 Download

This is build 15.00.1263.005 of Exchange 2013 and the update is helpfully named Exchange2013-x64-cu15.exe.  Which is a great improvement over the initial CUs that all had the same file name!  Details for the release are contained in KB 3197044.

Whether or not your AD Schema needs to be updated depends upon your initial Exchange 2013 version.  This will dictate if the AD Schema needs to be modified.  Check the values as noted in this post.  There may be additional RBAC definitions, so PrepareAD should be executed prior to installing CU15.  If setup detects that PrepareAD is required it will be automatically executed if the account running setup has the necessary permissions.  This was an issue first discussed in the MessageCopyForSentAsEnabled  post.

 

Updates Of Particular Note

CU15 contains the latest time zone updates.

The fix for the recent public folder indexing issues is included with CU15.  This was an issue introduced in both Exchange 2013 CU14 and Exchange 2016 CU3.  This is discussed in KB 3202691 – Public folders indexing doesn’t work correctly after you apply latest cumulative updates for Exchange ServerNote After you install this update on either version of Exchange Server, you should move the public folder mailbox to a new database to make sure that all items are indexed correctly.

CU15 supports .NET framework 4.6.2 – while this is an optional upgrade at this time, it makes sense to plan the .NET upgrade as it will become a required pre-requisite for the next CU.

On net-new installs the Desktop Experience feature is no longer required, since Windows has refactored how the components are installed in the newer versions of Windows.  This allows net-new installs of Exchange 2013 CU15 and Exchange 2016 CU4 to install less components than before as only the Media Foundation feature will be installed when using the /InstallWindowsComponents setup switch.  Since this is for net-new installs, upgrades to existing servers using either of the two aforementioned CUs will not change the installed OS components.  If you desire, you can add Media Foundation and remove the desktop experience after installing these CUs. This is optional.

 

Issues Resolved

KB 3198092 Update optimizes how HTML tags in an email message are evaluated in an Exchange Server 2013 environment

KB 3189547 FIX: Event ID 4999 for a System.FormatException error is logged in an Exchange Server 2013 environment

KB 3198046 FIX: The UM mailbox policy is not honored when UM call answering rules setting is set to False in an Exchange Server 2013 environment

KB 3195995 FIX: Event ID 4999 with MSExchangerepl.exe crash in Exchange Server 2013

KB 3208886 Send As permission of a linked mailbox is granted to a user in the wrong forest in Exchange Server 2013

KB 3188315 Messages are stuck in outbox when additional mailboxes are configured in Outlook on Exchange Server 2013

KB 3202691 Public folders indexing doesn’t work correctly after you apply latest cumulative updates for Exchange Server

KB 3203039 PostalAddressIndex property isn’t returning the correct value in Exchange Server 2013

KB 3198043 Shadow OAB downloads don’t complete in Exchange Server 2013

KB 3208885 Microsoft.Exchange.Store.Worker.exe process crashes after mailbox is disabled in Exchange Server 2013

KB 3201966 MSExchangeOWAAppPool application pool consumes excessive memory on restart in Exchange Server 2013

KB 3209041 FIX: An ActiveSync device becomes unresponsive until the sync process is complete in an Exchange Server environment

KB 3209013 FIX: The LegacyDN of a user is displayed incorrectly in the From field in the Sent Items folder on an ActiveSync device

KB 3209018 FIX: Results exported through the eDiscovery PST Export Tool never finishes in an Exchange Server environment

KB 3199519 Inconsistent search results when email body contains both English and non-English characters in Exchange Server 2013

KB 3211326 “ConversionFailedException” error when emails are sent on the hour in Exchange Server 2013

 

Some Items For Consideration

As with previous CUs, this one also follows the new servicing paradigm which was previously discussed on the blog.  The CU package can be used to perform a new installation, or to upgrade an existing Exchange Server 2013 installation.  You do not need to install Cumulative Update 4 or 5 for Exchange Server 2013 when you are installing the latest CU.  Cumulative Updates are well, cumulative.  What else can I say…

  • After you install this cumulative update package, you cannot uninstall the cumulative update package to revert to an earlier version of Exchange 2013. If you uninstall this cumulative update package, Exchange 2013 is removed from the server.
  • Place the server into maintenance mode prior to installing, confirm the install then take the server out of maintenance mode
  • Restart the server after installing the CU
  • Ensure that you consult with all 3rd party vendors which exist as part of your messaging environment.  This includes archive, backup, mobility and management services.
  • Ensure that you do not forget to install this update on management servers, jump servers/workstations and application servers where the management tools were installed for an application.  FIM and 3rd party user provisioning solutions are examples of the latter.
  • Ensure that the Windows PowerShell Script Execution Policy is set to “Unrestricted” on the server being upgraded or installed.  See KB981474.
  • Disable file system antivirus prior to installing.
  • Once server has been restarted, re-enable file system antivirus.
  • Note that customised configuration files are overwritten on installation.  Make sure you have any changes fully documented!
  • While CU15 does not add any new AD Schema changes, if you are on an out-dated CU currently then deploying CU15 may contain AD Schema updates for your organisation – please test and plan accordingly!  Whether or not your AD Schema needs to be updated depends upon your initial Exchange 2013 version.  This will dictate if the AD Schema needs to be modified.  Check the values as noted in this post.  Additional RBAC definitions may also be required.

Please enjoy the update responsibly!

What do I mean by that?  Well, you need to ensure that you are fully informed about the caveats with the CU  and are aware of all of the changes that it will make within your environment.  Additionally you will need to test the CU your lab which is representative of your production environment.

Cheers,

Rhoderick

Comments (46)

  1. Michael Gorn says:

    Link to KB3189547 https://support.microsoft.com/kb/3189547 above is broken.

  2. Sergi Martinez says:

    About the note “After you install this update on either version of Exchange Server, you should move the public folder mailbox to a new database to make sure that all items are indexed correctly”, wouldn’t it be enough to follow the instructions detailed on https://technet.microsoft.com/en-us/library/ee633475.aspx ?
    Basically it’s stopping the related services, delete the indexes and start them again to force a rebuild.

    1. Sergi Martinez says:

      Self-answer: stopping the services and deleting the GUID-style folder worked. The index has been rebuilt and now searches are working again.

  3. Luke says:

    updated 1 dag member fine, the other dag is failing at, ‘Mailbox role: mailbox service’ with the following error at the Mailbox role: Mailbox service
    The following error was generated when “$error.Clear();
    remove-PerfCounters -DefinitionFileName MailboxTransportSubmissionServicePerfCounters.xml
    new-PerfCounters -DefinitionFileName MailboxTransportSubmissionServicePerfCounters.xml
    ” was run: “System.ComponentModel.Win32Exception (0x80004005): The configuration registry key is invalid
    at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception, ErrorCategory errorCategory, Object target, String helpUrl)
    at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)
    at Microsoft.Exchange.Management.Tasks.ManagePerfCounters.DeletePerfCounterCategory()
    at Microsoft.Exchange.Management.Tasks.RemovePerfCounters.InternalProcessRecord()
    at Microsoft.Exchange.Configuration.Tasks.Task.b__b()
    at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)”.

    1. Scott Schone says:

      Did you ever find a solution to this? I’m getting the same error…opened a case with Microsoft…

    2. That looks like an access denied.

      Was this executed from an elevated cmd prompt?

      Cheers,
      Rhoderick

  4. vcs says:

    Hello there,
    I have been waiting for CU15. I am on CU4 or SP1. Do I have to be aware of anything? Thanks

    1. S.Jansen says:

      yes, you have to do some steps before.

      BACKUP!
      PrepareSchema and AD

      and then run the setup

    2. I would review all of the fixes and enhancements on all of the previous CUs (CU5 onwards)

      There is a lot of product updates since you are ~10 CUs behind.

      Cheers,
      Rhoderick

      1. GregF says:

        VCS did you ever complete this upgrade? I am in a similar situation, just wanted to see how you made out. Also, SJansen stated about prepping the schema, wouldn’t that happen during setup?

        1. Hello, I upgraded from CU 7 to CU15 and no problem. Schema update was not needed.

          1. In your case – yes.

            Though for the OP, they will have schema changes. If your account running setup has the necessary permissions it should automagically do the necessary. But I have seen this NOT happen due to what a customer did. Pending draft on that.

            Hence why I want control over this.

            In your scenario there were also RBAC definitions, and also issues applying them when there are no Schema changes.

            Cheers
            Rhoderick

      2. vcs says:

        Do I run these commands on the exchange server? Is the “setup” file found after extracting the CU15? Please clarify. Thanks.

        SETUP /PrepareSchema
        SETUP /PrepareAD

    3. GregF says:

      VCS did you ever complete this upgrade? I am in a similar situation, just wanted to see how you made out. Also, SJansen stated about prepping the schema, wouldn’t that happen during setup?

      1. vcs says:

        Thanks for your input. I have not done the upgrades. I am planning to upgrade in March.

  5. raj says:

    On https://technet.microsoft.com/en-us/library/bb691354(v=exchg.150).aspx MSFT recommends upgrade to CU13 on the important note.
    Please confirm if we can directly go to CU15 from previous CUs

    1. Yes – CUs are cumulative.

      Cheers,
      Rhoderick

  6. John Krick says:

    Hi Rhoderick, you indicate above “There may be additional RBAC definitions, so PrepareAD should be executed prior to installing CU15.”, but can you please confirm if there are definitely any RBAC changes for CU14 or CU15? Our Exchange team doesn’t have rights to run /PrepareAD, so this would have to be tested and implemented by our AD team, thus delaying the deployment to Exchange.

  7. Peter says:

    We have a single DAG deployment across two locations and we are in the process of upgrading exchange 2013 CU12 to CU15. Do I need to PrepareSchema and AD?

    1. Yes you should to be sure that the changes were actioned.

      Cheers,
      Rhoderick

      1. Peter says:

        Thanks Rhoderick.

        Cheers,
        Peter

  8. Mau says:

    Hi Mr. Midlne,

    What about if we have Exch 2013 CU 13, we need to PrepareAD, DOMAIN or SCHEMA to update CU15??

    Regards, tnks a lot…

    1. I do not believe there were, but I do like to run all the steps to ensure all is well.

      Cheers,
      Rhoderick

      1. Mau says:

        OK, thnks a lot… regards

  9. Marc-André Lassonde says:

    Question – Will I need a lot of space for upgrading my mailbox database ? I currently have 3 mailbox database on a 800G drive with 88G free space.

    1. I think they wont grow on/after upgrade.

      1. Yup – that should not impact the size of the mailbox DBs.

        Cheers,
        Rhoderick

    2. Marc-André Lassonde says:

      Thank you
      I really do appreciate.

      M.-A.

  10. Dharmendra Kumar says:

    Hi,

    I have exchange 2010 Sp3 running without any CU update,
    can i update latest CU15 on running exchange setup.. ?
    is there any recommended CU update pattern for exchange 2010 sp3 setup
    Please suggest.
    Thanks

    1. Exchange 2010 uses RU not CU.

      If you already have SP3 installed, just install the latest.

      Cheers,
      Rhoderick

  11. rino19ny says:

    dear all,

    how is the update to CU15 been? any deal breaker/s?

    regards,

    1. Hello, I upgraded from CU7 to CU 15 last month. No problems so far. The positives are less errors in event log and faster startup of services after reboot:)

  12. Luis Reyes says:

    My environment has Exchange SP1 CU4, I would like to update to CU14.
    My question is… Is it necessary to extend schema?

    Could you help me?

    Best Regards

    Luis Reyes

    1. Yes – AD upgrade steps are required.

      Cheers,
      Rhoderick

  13. vcs says:

    All, ( to benefit those that want to upgrade to CU15)
    I upgraded our exchange 2013 CU4 or SP1 to CU15 over the weekend. No issues yet (surprise !!).

    Here is summary:
    Run this command once if you have not done so on each servers.
    Run this command to fix slow Exchange updates
    %windir%\Microsoft.NET\Framework64\v4.0.30319\ngen.exe update

    Backup AD, Exchange ( I did multiple times on multiple servers using different methods)

    SETUP /PrepareSchema
    wait at least 15-30 minutes for replication to finish. Make sure no errors by running repadmin /showreps
    SETUP /PrepareAD
    wait at least 15-30 minutes for replication to finish. Make sure no errors by running repadmin /showreps
    run SETUP to install CU15. it takes about 1.5 hour. Restart. Repeat on additional servers.
    Welcome to CU15!
    Good luck !

    1. rino19ny says:

      hi,
      “Run this command to fix slow Exchange updates” -> what you mean by “slow Exchange updates?

      “%windir%\Microsoft.NET\Framework64\v4.0.30319\ngen.exe update” -> what this have to do with Exchange?

      1. vcs says:

        There are reports that exchange 2013 can hang and takes longer to install the update. It can take 2-3 hours longer than usual. Read this article for more info.
        http://practical365.com/exchange-server/slow-installation-of-exchange-server-updates-on-windows-server-2012-r2/

        1. vcs says:

          It’s actually mentioned in the CU12 released by Rhoderick Milne.
          https://blogs.technet.microsoft.com/rmilne/2016/03/15/exchange-2013-cu12-released/

          There is an underlying issue with .NET Framework when Exchange is installed on Windows Server 2012 R2. Only Exchange 2013 SP1 onwards are supported on Windows Server 2012 R2. Whilst the .NET team works the issue, a workaround is to execute this on the Exchange server:

          “%windir%\Microsoft.NET\Framework64\v4.0.30319\ngen.exe update”
          Errors and warnings encountered running this command can be safely ignored provided the final exit status code of 0 is reported in the output.

        2. vcs says:

          It’s actually mentioned in CU12 upgrade by Rhoderick Milne.

          https://blogs.technet.microsoft.com/rmilne/2016/03/15/exchange-2013-cu12-released/

          There is an underlying issue with .NET Framework when Exchange is installed on Windows Server 2012 R2. Only Exchange 2013 SP1 onwards are supported on Windows Server 2012 R2. Whilst the .NET team works the issue, a workaround is to execute this on the Exchange server:

          “%windir%\Microsoft.NET\Framework64\v4.0.30319\ngen.exe update”
          Errors and warnings encountered running this command can be safely ignored provided the final exit status code of 0 is reported in the output.

      2. Exchange is based off managed code, thus it relies upon .NET framework.

        An issue in .NET impacts Exchange….

        Cheers,
        Rhoderick

    2. GregF says:

      Wont the install of CU15 automatically do the Schema and AD updates? Is running it manually more of a comfort thing or best practice?

      1. Take a look at this post please Greg
        https://blogs.technet.microsoft.com/rmilne/2017/03/29/unexpected-exchange-ad-object-values/

        Do not assume that it is always automagic….

        Cheers,
        Rhoderick

  14. Arjun Shelke says:

    If we plan to upgrade .Net along with CU15 where we have CU12, what would be the order of upgrade?
    Considering CU12 would not support .Net 4.6.2
    Is it ok to upgrade .Net first and then CU15? Thanks.

    1. Hello, you can update to CU15 and update .net framework after.

      Installing 4.6.2 with CU12 will cause problem and I dont work if you can upgrade exchange with non started services.
      Have a nice day

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