Microsoft released the latest update to Exchange 2013 and 2016 on 6/21/2016. No major changes, but the DAG auto rebalancing and finally .NET 4.6.1 support are much desired changes. The new DAG feature is important to larger environments and the .NET support is important since 4.6.1 is an automatically suggested update and will cause issues on Exchange, unless you update to CU2\CU13 before install it.
EHLO Blog Post on this: https://blogs.technet.microsoft.com/exchange/2016/06/21/released-june-2016-quarterly-exchange-updates/
Tony Redmon’s post: https://www.itunity.com/article/excitement-good-news-exchange-quarterly-updates-3412
Key Changes
- 2016: DAG activation preference auto rebalancing. With CU2 and higher databases will be re-activated on the highest preference copy now, if it is healthy.
- 2016 & 2013: .NET 4.6.1 support – Install CU2/CU13 FIRST then you can upgrade to .NET 4.6.1. Servers should be put in Maintenance mode BEFORE installing CUs and until upgraded to .NET 4.6.1
- 2016 & 2013: AutoReseed now supports BitLocker volumes, disabled by default
- 2016: AD schema will be updated
Other Changes
- 2016: Get-ExchangeServer cmdlet updated to include rule definitions. Not a big deal, since 2016 servers will either be a Mailbox of Edge server
- 2016: Self-signed certificates will now use SHA-2
2016 CU2 Key Fixes
- KB 3164346 FIX: Cannot connect to a mailbox when MAPI over HTTP protocol is used in an on-premises Exchange Server 2016 installation
- KB 3162968 Exchange 2013 OWA throws ScriptLoadError after login
- KB 3141440 Installation or upgrade to Exchange Server 2016 takes longer on Windows Server 2012 R2
2013 CU13 Key Fixes
- KB 3164701 Unable to create send connector successfully
- KB 3164700 Write scope in EAC on a role group reverts to default scope in Exchange Server 2013
- KB 3164359 FIX: A Stop error and restart occurs by the ServerOneCopyInternalMonitorForceReboot responder in Exchange Server 2013
- KB 3163186 Meeting Organizer May See Repair Update Meeting Items For All Attendees When Sending Appointment To A Distribution List
- KB 3163173 Meeting Users may recieve the NDR 554 5.6.0 STOREDRV.Submit.Exception:TextConvertersException
- KB 3163039 FIX: The message body in an email message is garbled when Simplified Chinese characters are included in the BCC field in an Exchange Server environment
- KB 3162964 FIX: Items are held unnecessarily in the DiscoveryHold folder after the In-Place Hold expires in Exchange Server 2013
- KB 3162957 FIX: “Invalid search filter” error occurs when you search for recipients based on the “UM Mailbox Policy” filter in Exchange Server 2013
- KB 3162934 FIX: The “Test-ExchangeSearch” cmdlet fails without parameters or with the “-MailboxDatabase” parameter in Exchange Server 2013
- KB 3162933 FIX: Outlook client remains disconnected for 1-2 hours after the mailbox is migrated successfully to Exchange Server 2013
- KB 3162772 Meeting request acceptances not handled correctly
- KB 3160935 FIX: A public folder forwarding rule does not work after you migrate to Exchange Server 2013
- KB 3150799 IMAP with NTLM fils if UPN and Primary SMTP are different to E15ENT
- KB 3150036 FIX: The EdgeTransport process crashes on an Exchange Server 2013 server that has the Edge Server role installed
- KB 3149767 FIX: “System.FormatException” error message is logged in Event Viewer when Exchange 2013 is run on a French operating system
- KB 3142290 FIX: The email address policy doesn’t generate correct email addresses for aliases that use specific characters in Exchange Server 2013
- KB 3142157 Exchange Server Health Management Worker process restarts
- KB 3140102 OWA application pool crashes with KeyNotFoundException
- KB 3129946 An update is available to support the AutoReseed feature in a DAG environment that is BitLocker enabled in Exchange Server 2013
- KB 3126723 FIX: The retention policy does not work correctly on the In-Place Archive mailbox in Exchange Server
- KB 2661294 Email address policy doesn’t generate addresses of recipients correctly in Exchange Server 2010 or Exchange Server 2013
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