Microsoft Exchange and Active Directory Blog
In the comments to the article "Exchange 2016: Install Cumulative Updates (CU)" it was pointed out to me that with Veeam Backup & Replication 9.5 U1 and Exchange 2016 CU5 there are problems with the single item restore. The databases can be backed up and restored normally, but the Veeam Explorer for Exchange no longer works with Exchange 2016 ... Read more
During the migration from Exchange 2013 to Exchange 2016, the following error (version mismatch) may occur when moving user mailboxes from Exchange 2013 to Exchange 2016: A version mismatch was detected (Actual:6, Expected:5) The following message can then be seen in the Exchange 2013 server log: 2017-04-23T20:37:21.432Z,6,Default,Error,",", "RegisterMigrationBatch failed, exception at Microsoft.Exchange.Migration.MigrationServiceHelper.SafeInvokeImplMethod(Action method, MigrationServiceRpcMethodCode methodCode) at Microsoft.Exchange.Migration.MigrationNotificationRpcSkeleton.RegisterMigrationBatch(IMigrationNotification ... Read more
In article 2, I had already written my opinion on RPCoverHTTP (Outlook Anywhere) in conjunction with Sophos XG and two public DNS names. Here again briefly to repeat: The background is that most of the protection mechanisms of the web server protection for Outlook Anywhere must be switched off. This then also applies to the remaining web services such as OWA ... Read more
In January, I published the first public version of the Exchange Autodiscover Whitepaper. So far the PDF has more than 5000 downloads, now there is an updated version. The PDF now comprises 64 pages on Exchange Autodiscover, including sample configurations (6 pages more). A revision was necessary, as I had previously only dealt with the topic of split DNS in conjunction with Autodiscover ... Read more
OPNSense is a fork of the well-known open source firewall PFSense, I personally like OPNSense better, the GUI is tidier, there is a REST api and the most important plug-ins are also available. As there is a plugin for HAProxy and also for Let's Encrypt for OPNSense, I have started testing this combination in conjunction with Exchange 2016. OPNSense ... Read more
The Chrome browser reports the following error for websites running on an IIS server on Windows Server 2016: ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY In this case, Chrome does not allow the error to be ignored. The problem also occurs with Exchange 2016 servers installed on Windows Server 2016. The problem lies in old cipher suites and ... Read more
If anyone is running an Exchange 2016 server with the Edge Transport role on Windows Server 2016, you should read the post from the Exchange Team Blog, it says: Today we are announcing an update to our support policy for Windows Server 2016 and Exchange Server 2016. At this time we do not recommend customers install ... Read more
I have now received several emails with questions about the Exchange 2016 update process. There are also always various questions in the comments to articles that refer to updates. So here is a short how-to on how to install Exchange updates. What is a Cumulative Update for Exchange? Updates for Exchange are called ... Read more
New updates have been released for all Exchange Server versions. Click here to download directly: Exchange Server 2016 CU5 Exchange Server 2013 CU16 Exchange Server 2010 SP3 UR17 Exchange Server 2007 SP3 UR23 Click here for details of the changes: Exchange Server 2016 CU5 Exchange Server 2013 CU16 Exchange Server 2010 SP3 UR17 Exchange ... Read more
In this blog post, Thomas Shinder from Microsoft presented the new "Microsoft Security Guide". The article is quite interesting and well worth reading. I was particularly taken with the last section. It says: The Security Update Guide development API can be used to create a report in CVRF format. To use this API, click the ... Read more
