KB5077373: Setup Dynamic Update for Windows Server, version 23H2: February 10, 2026

Applies To
Windows Server, version 23H2

Note

  • Windows Secure Boot certificate expiration
  • Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed business devices for the past months. Devices that haven’t received the newer certificates will continue to start and operate normally, and standard Windows updates will continue to install. We will continue to install the newer certificates via Windows updates in the coming months.
  • You can check your PC status on the Windows Security app. If you are an IT administrator, follow the guidance on the Secure Boot Playbook for Windows clients and Windows Server.

Summary

This update makes improvements to Windows setup binaries or any files that setup uses for feature updates.

How to get this update

Install this update

To install this update, use one of the following release channels.


Available Next step
Available This update is available through Windows Update. It will be downloaded and installed automatically.
Prerequisites There are no prerequisites to apply this update.
Restart information You do not have to restart your computer after you apply this update.
Update replacement information This update replaces the previously released update KB5068795.

File information

The English (United States) version of this software update installs files that have the following attributes. This update might contain files for additional languages.

For all supported x64-based versions
File name File version Date Time File size
appraiser.sdb Not versioned 13-Jan-26 19:26 2,777,691
bootsvc.dll 10.0.25398.2140 13-Jan-26 19:26 298,968
cmi2migxml.dll 10.0.25398.2140 13-Jan-26 19:26 222,624
csiagent.dll 10.0.25398.2140 13-Jan-26 19:26 714,144
migcore.dll 10.0.25398.2140 13-Jan-26 19:26 9,270,728
mighost.exe 10.0.25398.2140 13-Jan-26 19:26 284,064
migisol.dll 10.0.25398.2140 13-Jan-26 19:26 144,840
migres.dll 10.0.25398.2140 13-Jan-26 19:26 26,016
MigStore.dll 10.0.25398.2140 13-Jan-26 19:26 1,295,816
MigSys.dll 10.0.25398.2140 13-Jan-26 19:26 460,232
MXEAgent.dll 10.0.25398.2140 13-Jan-26 19:26 386,464
ReAgent.dll 10.0.25398.2140 13-Jan-26 19:26 603,552
IOSchedFilter-Replacement.man Not versioned 13-Jan-26 19:26 917
Microsoft-Windows-NetworkController-Framework-Replacement.man Not versioned 13-Jan-26 19:26 959
VsmKeyMigPlugin.dll 10.0.25398.2140 13-Jan-26 19:26 107,936
tcblaunch-replacement.man Not versioned 13-Jan-26 19:26 1,935
Setup.exe 10.0.25398.2140 13-Jan-26 19:26 333,216
SetupPlatform.cfg Not versioned 13-Jan-26 19:26 19,051
SetupPlatform.dll 1.80.25398.2140 13-Jan-26 19:26 9,213,344
SetupPlatform.exe 1.80.25398.2140 13-Jan-26 19:26 243,144
SetupPrep.exe 10.0.25398.2140 13-Jan-26 19:26 1,328,544
SFPATRS1.INF Not versioned 13-Jan-26 19:26 169,730
upgradeagent.dll 10.0.25398.2140 13-Jan-26 19:26 3,306,912
winsetup.dll 10.0.25398.2140 13-Jan-26 19:26 3,044,768
WinSetupBoot.sys 10.0.25398.2140 13-Jan-26 19:26 112,032
WinSetupMon.sys 10.0.25398.2140 13-Jan-26 19:26 132,536

References

Description of the standard terminology that is used to describe Microsoft software updates

Query words: Setup DU