Windows Server 2025 update history
Applies To
Updates for Windows Server 2025
Windows Server 2025 is the latest release in our Long Term Servicing Channel. On the left side of this page, you’ll find a list of all the updates released for this version of Windows Server. You can also find more information about releases and any known issues. Installing the most recent update ensures that you also get any previous updates you might have missed, including any important security fixes.
Current status of Windows Server 2025
For the most up-to-date information about known issues for Windows and Windows Server, please go to the Windows release health dashboard.
Known issues
Symptoms
We are aware of an issue affecting IT admins, where mounting an Active Directory (AD) or AD LDS database (DIT) with ntdsutil.exe can cause unintended format changes.
When an IT admin copies an 8 KB page-size DIT to a machine running Windows Server 2025, or upgrades to Windows Server 2025 “in-place” and mounts it using ntdsutil.exe, a bug in the tool modifies and upgrades the format versions in the DIT database header. This modification does not happen to 32 KB page-sized DIT files. The upgraded format versions prevent AD or LDS from loading the database, leaving the directory service unable to start.
Note: The ntdsutil.exe does not destroy your DIT. Instead, it upgrades the database format to a newer version that the underlying ESE (Extensible Storage Engine) engine (esent.dll) supports. This format upgrade introduces new features that improve ESE capabilities but can cause compatibility issues in distributed systems like Active Directory (AD), where all domain controllers (DCs) must maintain consistent database formats to ensure replication consistency.
Workaround We advise organizations not to mount AD/LDS DIT files on Windows Server 2025 using ntdsutil.exe “files” subcommand until further guidance is available.
Microsoft is working on a fix for this issue, and we'll provide more information when it is available.
Notes and messages
None.
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