Exchange 2013 Windows Updates Help Please!

Hello
My Setup:
Server01: Server 2012 Standard + Exchange 2013 Standard
Server02: Server 2012 Standard + Exchange 2013 Standard
DAG Enabled.
Well I'm wondering the best way to Install Windows Updates.
Which Server first? the Passive or Active node of Databases?
because after a Windows Update there are reboots required, what is the best practise when installing Windows Updates.
Thank You!

Hi,
There is no order in a DAG because there is no "active server" or "passive server", there is only servers that host either active or passive database copies. So when updating a DAG member you should make sure it is only hosting passive database copies at
the time.
Per my known, if the server need be restarted after installing certain Windows update, I suggest you run the maintenance scripts to avoid some unexpected situation.
Here is a related thread which can help you for your reference.
http://social.technet.microsoft.com/Forums/en-US/ff206f9c-6e39-4bae-ac1d-1b9d9b465854/best-practices-for-patching-exchange-2010-servers?forum=exchange2010
Hope this helps.
Best regards,
Belinda
Belinda Ma
TechNet Community Support

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Hello,
Here is a blog for your reference.
http://blogs.technet.com/b/timmcmic/archive/2012/03/11/exchange-and-vss-my-exchange-writer-is-in-a-failed-retryable-state.aspx
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[11/14/2014 22:00:39.0926] [2] The properties changed on the object 'Exchange Administrative Group (FYDIBOHF23SPDLT)' (CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=ExchangeOrg,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=domain,DC=local)
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[11/14/2014 22:00:39.0926] [2] Previous operation run on domain controller 'DomainController'.
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[11/14/2014 22:00:39.0942] [2] Previous operation run on domain controller 'DomainController'.
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[11/14/2014 22:00:40.0036] [2] [ERROR] The object exists.
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[11/14/2014 22:00:40.0083] [1] The following 1 error(s) occurred during task execution:
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   at Microsoft.Exchange.Data.Directory.ADDataSession.ExecuteModificationRequest(ADObject entry, DirectoryRequest request, ADObjectId originalId, Boolean emptyObjectSessionOnException, Boolean isSync)
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[11/14/2014 22:00:40.0098] [1] [ERROR] The following error was generated when "$error.Clear();
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Exchange,CN=Services,CN=Configuration,DC=domain,DC=local' already exists. ---> System.DirectoryServices.Protocols.DirectoryOperationException: The object exists.
   at System.DirectoryServices.Protocols.LdapConnection.ConstructResponse(Int32 messageId, LdapOperation operation, ResultAll resultType, TimeSpan requestTimeOut, Boolean exceptionOnTimeOut)
   at System.DirectoryServices.Protocols.LdapConnection.SendRequest(DirectoryRequest request, TimeSpan requestTimeout)
   at Microsoft.Exchange.Data.Directory.PooledLdapConnection.SendRequest(DirectoryRequest request, LdapOperation ldapOperation, Nullable`1 clientSideSearchTimeout, IActivityScope activityScope, String callerInfo)
   at Microsoft.Exchange.Data.Directory.ADDataSession.ExecuteModificationRequest(ADObject entry, DirectoryRequest request, ADObjectId originalId, Boolean emptyObjectSessionOnException, Boolean isSync)
   --- End of inner exception stack trace ---
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   at Microsoft.Exchange.Data.Directory.ADDataSession.ExecuteModificationRequest(ADObject entry, DirectoryRequest request, ADObjectId originalId, Boolean emptyObjectSessionOnException, Boolean isSync)
   at Microsoft.Exchange.Data.Directory.ADDataSession.ExecuteModificationRequest(ADObject entry, DirectoryRequest request, ADObjectId originalId, Boolean emptyObjectSessionOnException)
   at Microsoft.Exchange.Data.Directory.ADDataSession.Save(ADObject instanceToSave, IEnumerable`1 properties, Boolean bypassValidation)
   at Microsoft.Exchange.Management.Deployment.InstallAdministrativeGroup.InstallConfigurationObject[TObject](ADObjectId id, Boolean force, TObject instance)
   at Microsoft.Exchange.Management.Deployment.InstallAdministrativeGroup.InternalProcessRecord()
   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()
   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)".
[11/14/2014 22:00:40.0098] [1] [ERROR] Active Directory operation failed on DomainController. The object 'CN=Folder Hierarchies,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=ExchangeOrg,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=domain,DC=local'
already exists.
[11/14/2014 22:00:40.0098] [1] [ERROR] The object exists.
[11/14/2014 22:00:40.0098] [1] [ERROR-REFERENCE] Id=CommonGlobalConfig___48aad7b8f00942afbc699677d60bb3fe Component=EXCHANGE14:\Current\Release\Shared\Datacenter\Setup
[11/14/2014 22:00:40.0098] [1] Setup is stopping now because of one or more critical errors.
[11/14/2014 22:00:40.0098] [1] Finished executing component tasks.
[11/14/2014 22:00:40.0130] [1] Ending processing Install-ExchangeOrganization
[11/14/2014 22:00:40.0130] [0] CurrentResult console.ProcessRunInternal:198: 1
[11/14/2014 22:00:40.0145] [0] CurrentResult launcherbase.maincore:90: 1
[11/14/2014 22:00:40.0145] [0] CurrentResult console.startmain:52: 1
[11/14/2014 22:00:40.0145] [0] CurrentResult SetupLauncherHelper.loadassembly:452: 1
[11/14/2014 22:00:40.0145] [0] The Exchange Server setup operation didn't complete. More details can be found in ExchangeSetup.log located in the <SystemDrive>:\ExchangeSetupLogs folder.
[11/14/2014 22:00:40.0145] [0] CurrentResult main.run:235: 1
[11/14/2014 22:00:40.0145] [0] The registry key, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\V15\Setup, wasn't found.
[11/14/2014 22:00:40.0145] [0] CurrentResult setupbase.maincore:396: 1
[11/14/2014 22:00:40.0145] [0] End of Setup

Hi Ryan,
From the exchange setup log information, we can find the following error :
Active Directory operation failed on DomainController. The object 'CN=Folder Hierarchies,CN=Exchange Administrative Group (FYDIBOHF23SPDLT),CN=Administrative Groups,CN=ExchangeOrg,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=domain,DC=local' already exists
I recommend you refer to the following article to resolve the issue :
http://www.expta.com/2013/04/active-directory-operation-failed.html
This happens when the Public Folder tree object has been manually deleted from Active Directory using a tool such as ADSI Edit. In some organizations it becomes impossible to remove Public Folders properly from a legacy Exchange org and admins resort to
using brute force to remove them. However, there are lingering attributes in AD that are still pointing to the deleted PFTree, which causes CU1 setup to fail.
Please note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information. And the changes made in the above blog is not supported officially
by Microsoft.
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