Microsoft Exchange and Active Directory Blog
The updates for Windows Server which were released on February 19, 2019 after the regular patchday are also important for Exchange Server running on Windows Server 2016. Specifically, it is about a problem that has existed since September 2018: KB4457127 causes problems on DCs in connection with Exchange KB4457127 causes problems after installation ... Read more
Yesterday, Microsoft released a security update for Exchange 2016 and Exchange 2019. The update is classified as "Important" and should therefore be installed promptly. Here is the description of the vulnerability: A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory. An attacker who successfully exploited ... Read more
Microsoft has released a security update for Exchange 2016 CU 10 and CU 11. The update fixes a tampering vulnerability that has been rated as "Important": A tampering vulnerability exists when Microsoft Exchange Server fails to properly handle profile data. An attacker who successfully exploited this vulnerability could modify a targeted user's profile data. To exploit the ... Read more
In the last part of the article series "Migration from Exchange 2016 to Exchange 2019", the uninstallation of Exchange 2016 is prepared and the migration completed. The small Troubleshooting section is dedicated to the most common cause of failed or stopped MoveRequests. During migrations, problems can always occur that could not be ruled out beforehand. The causes can be ... Read more
Part 1 of the article series "Migration from Exchange 2016 to Exchange 2019" only described the test environment and the installation of Exchange 2019. Now the more interesting steps follow. This part is about the configuration of Exchange 2019 for co-existence with Exchange 2016. The aim of this article is to create a functional Exchange 2019 server and ... Read more
A reader asked me if and how it is possible to add a link to the OWA login page. In this case, it was about adding a link to the password reset on the login page. At this point, it should be said that it is possible to change the login page, but these changes are made during installation. Read more
With Exchange Server 2016 CU11, the requirements have changed somewhat, so here is an updated HowTo for installing Exchange 2016 from CU11 on Windows Server 2016. This HowTo is not an update of an existing installation, but a new/first installation on Windows Server 2016. A HowTo for ... Read more
A reader reported a problem after installing a Cumulative Update (CU) on an Exchange 2016 server. It was no longer possible to access OWA and ECP after the installation. Both applications only returned a server error. When calling OWA, the error message read something like this: The file or assembly "Microsoft.Exchange.Common, Version=15.0.0.0, Culture=neutral, ... Read more
Better late than never: CU 11 for Exchange Server 2016 was released today. Microsoft is a little late this time, as the updates were actually expected back in September. Due to the late release of CU11, there will be no CU in December. CU12 will therefore only be released in March 2019 together with CU1 for Exchange ... Read more
A reader of my site asked me if there is a way to receive an overview of a calendar by e-mail. The background was that a vacation calendar was maintained within the department, which was an Exchange resource mailbox in which each team member entered their vacation. The requirement was now an overview of this calendar for ... Read more
