Microsoft Exchange and Active Directory Blog
Microsoft has released new updates for all supported Exchange Server versions. The September updates do not include security updates, but contain updates for hybrid scenarios. Here you can download the updates directly: Microsoft writes about the updates: The October 2025 SUs fix security vulnerabilities that have been responsibly reported to Microsoft by security partners and identified by Microsoft's internal processes. Read more
Microsoft has released new updates for all supported Exchange Server versions. The September updates do not include security updates, but contain updates for hybrid scenarios. Click here to download the updates directly: The September update is an optional update, so the update is not mandatory, but fixes problems in hybrid operation ... Read more
Microsoft released new security updates for Exchange Server 2016, 2019 and SE in August. The updates have been available since 12.08., but as I was on vacation, the message appears here late. Click here to download the updates directly: The updates fix the following vulnerabilities, all of which are rated „Important“. Read more
Microsoft announced yesterday that Exchange Server 2016 and 2019 can receive extended security updates. The ESU program (Extended Security Update program) already exists for Windows Server 2012 and other older operating systems. This is not a general extension of support for Exchange Server 2016 and Exchange Server 2019 beyond October 14, 2025. ... Read more
Microsoft has released new updates for Exchange Server 2016 and 2019. The May updates do not contain any security-critical updates, but fix problems that have been known in some cases since November 2024. Further information can be found on the Exchange Team Blog. Click here to download the May updates: Here you can find the article on the Exchange Team ... Read more
Microsoft has released new updates for Exchange Server 2016 and 2019 today. This is not a security update. The April update can be downloaded here: The update prepares the use of the Graph API in Exchange Hybrid environments. The aim is to replace the EWS API. Microsoft writes the following: As part of our ... Read more
I have already reported on the StalledDueToSource_DiskLatency error during Exchange migrations. At that time, I was able to resolve the error by resolving a spanned volume across several disks. During another Exchange Server 2016 to Exchange 2019 migration, the problem occurred again. Here, too, the StalledDueToSource_DiskLatency error only occurred with the move requests of the ... Read more
In the second part of the migration from Exchange 2016 to Exchange 2019 CU15, Exchange 2019 was configured. This part now deals with the migration of the mailboxes to the new server. Finally, the old Exchange 2016 server can be uninstalled and the migration completed. Migrating the mailboxes The mailboxes can be migrated via the Exchange Admin Center ... Read more
In the first part of this article series, I briefly introduced the environment, the Exchange 2019 server has now been installed and the configuration and migration can begin. The second part deals with the configuration of the installed Exchange 2019 server. Here is an overview of the environment: If it is a larger Exchange ... Read more
The new Exchange Server version is expected this year. It makes sense to start working on the migration of existing Exchange 2016 servers to Exchange SE now, as the time window for the migration is short. However, this is not a problem if you prepare in good time. This article is about the migration of ... Read more
