KB5077374: Setup Dynamic Update for Windows 11, version 23H2: February 10, 2026

Applies To
Windows 11 Home and Pro, version 23H2 Windows 11 Enterprise and Education, version 23H2 Windows 11 Enterprise Multi-Session, version 23H2

Summary

This update makes improvements to Windows setup binaries or any files that setup uses for feature updates in Windows 11, version 23H2. The following is a summary of the issues that this update addresses when you install this update. The bold text within the brackets indicates the item or area of the change we are documenting.

  • [Secure Boot] This release will execute updates in the Boot Manager on devices that already have the Windows UEFI CA 2023 certificate in their Secure Boot Signature Database (DB). It replaces the 2011 signed bootmgfw.efi with the 2023 signed bootmgfw.efi. Be advised of the consequences of resetting the DB or toggling Secure Boot, as this can cause a "Secure Boot violation" issue. In those rare cases, the solution is to create the Secure Boot recovery media.

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 KB5074208.

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
acmigration.dll 10.0.22621.6625 13-Jan-26 16:42 660,864
Appraiser.dll 10.0.22621.6625 13-Jan-26 16:42 2,876,800
appraiser.sdb Not versioned 13-Jan-26 16:42 2,761,104
AppraiserRes.dll 10.0.22621.6625 13-Jan-26 16:42 181,632
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 25,600
bcd.dll 10.0.22621.6625 13-Jan-26 16:42 154,360
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 29,696
bootsvc.dll 10.0.22621.6625 13-Jan-26 16:42 298,960
cmi2migxml.dll 10.0.22621.6625 13-Jan-26 16:42 230,808
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 25,088
csiagent.dll 10.0.22621.6625 13-Jan-26 16:42 763,264
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 28,672
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 30,208
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 31,744
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 26,624
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 27,648
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 30,720
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 31,232
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 24,576
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 28,160
imagelib.dll Not versioned 13-Jan-26 16:42 968,096
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 20,992
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 20,480
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 27,136
MediaSetupUIMgr.dll 10.0.22621.6625 13-Jan-26 16:42 1,254,808
migcore.dll 10.0.22621.6625 13-Jan-26 16:42 9,762,208
mighost.exe 10.0.22621.6625 13-Jan-26 16:42 279,936
migisol.dll 10.0.22621.6625 13-Jan-26 16:42 148,880
migres.dll 10.0.22621.6625 13-Jan-26 16:42 26,024
MigStore.dll 10.0.22621.6625 13-Jan-26 16:42 1,357,200
MigSys.dll 10.0.22621.6625 13-Jan-26 16:42 492,928
MXEAgent.dll 10.0.22621.6625 13-Jan-26 16:42 411,048
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 29,184
ReAgent.dll 10.0.22621.6625 13-Jan-26 16:42 722,304
EdgeMigrationPlugin.dll 1.0.0.1 13-Jan-26 16:42 157,056
microsoft-hyper-v-migration-replacement.man Not versioned 13-Jan-26 16:42 6,052
Microsoft-Windows-CoreSystem-InitMachineConfig-Replacement.man Not versioned 13-Jan-26 16:42 1,658
ServicingCommon.dll 10.0.22621.6625 13-Jan-26 16:42 1,001,376
ServicingCommon.dll 10.0.22621.6625 13-Jan-26 16:42 1,001,400
VsmKeyMigPlugin.dll 10.0.22621.6625 13-Jan-26 16:42 107,936
tcblaunch-replacement.man Not versioned 13-Jan-26 16:42 1,935
tpmdriverwmi-replacement.man Not versioned 13-Jan-26 16:42 2,695
twinui-replacement.man Not versioned 13-Jan-26 16:42 12,912
ReserveManager.dll 10.0.22621.6625 13-Jan-26 16:42 308,608
Setup.exe 10.0.22621.6625 13-Jan-26 16:42 333,224
SetupCore.dll 10.0.22621.6625 13-Jan-26 16:42 2,397,600
SetupMgr.dll 10.0.22621.6625 13-Jan-26 16:42 1,115,520
SetupPlatform.cfg Not versioned 13-Jan-26 16:42 17,298
SetupPlatform.dll 1.74.22621.6625 13-Jan-26 16:42 9,684,384
SetupPlatform.exe 1.74.22621.6625 13-Jan-26 16:42 271,760
SetupPrep.exe 10.0.22621.6625 13-Jan-26 16:42 1,303,968
UpdateAgent.dll 10.0.22621.6625 13-Jan-26 16:42 3,474,816
upgradeagent.dll 10.0.22621.6625 13-Jan-26 16:42 3,331,472
winsetup.dll 10.0.22621.6625 13-Jan-26 16:42 3,061,160
WinSetupBoot.sys 10.0.22621.6625 13-Jan-26 16:42 112,000
WinSetupMon.sys 10.0.22621.6625 13-Jan-26 16:42 107,920
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 17,920
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 18,432
For all supported Arm64-based versions
File name File version Date Time File size
acmigration.dll 10.0.22621.6625 13-Jan-26 16:42 1,131,904
Appraiser.dll 10.0.22621.6625 13-Jan-26 16:42 2,857,872
appraiser.sdb Not versioned 13-Jan-26 16:42 1,972,597
AppraiserRes.dll 10.0.22621.6625 13-Jan-26 16:42 173,968
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 25,600
bcd.dll 10.0.22621.6625 13-Jan-26 16:42 142,584
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 29,696
bootsvc.dll 10.0.22621.6625 13-Jan-26 16:42 285,176
cmi2migxml.dll 10.0.22621.6625 13-Jan-26 16:42 221,088
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 25,088
csiagent.dll 10.0.22621.6625 13-Jan-26 16:42 759,184
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 28,672
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 30,208
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 31,744
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 26,624
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 27,648
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 30,720
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 31,232
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 24,576
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 28,160
imagelib.dll Not versioned 13-Jan-26 16:42 980,376
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 20,992
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 20,480
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 27,136
MediaSetupUIMgr.dll 10.0.22621.6625 13-Jan-26 16:42 1,257,880
migcore.dll 10.0.22621.6625 13-Jan-26 16:42 10,191,776
mighost.exe 10.0.22621.6625 13-Jan-26 16:42 265,616
migisol.dll 10.0.22621.6625 13-Jan-26 16:42 115,104
migres.dll 10.0.22621.6625 13-Jan-26 16:42 17,296
MigStore.dll 10.0.22621.6625 13-Jan-26 16:42 1,388,440
MigSys.dll 10.0.22621.6625 13-Jan-26 16:42 497,056
MXEAgent.dll 10.0.22621.6625 13-Jan-26 16:42 401,320
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 29,184
ReAgent.dll 10.0.22621.6625 13-Jan-26 16:42 1,197,472
EdgeMigrationPlugin.dll 1.0.0.1 13-Jan-26 16:42 149,920
microsoft-hyper-v-migration-replacement.man Not versioned 13-Jan-26 16:42 6,052
Microsoft-Windows-CoreSystem-InitMachineConfig-Replacement.man Not versioned 13-Jan-26 16:42 1,658
ServicingCommon.dll 10.0.22621.6625 13-Jan-26 16:42 1,837,280
ServicingCommon.dll 10.0.22621.6625 13-Jan-26 16:42 1,837,328
VsmKeyMigPlugin.dll 10.0.22621.6625 13-Jan-26 16:42 94,592
tcblaunch-replacement.man Not versioned 13-Jan-26 16:42 1,935
tpmdriverwmi-replacement.man Not versioned 13-Jan-26 16:42 2,695
twinui-replacement.man Not versioned 13-Jan-26 16:42 12,912
ReserveManager.dll 10.0.22621.6625 13-Jan-26 16:42 302,504
Setup.exe 10.0.22621.6625 13-Jan-26 16:42 315,816
SetupCore.dll 10.0.22621.6625 13-Jan-26 16:42 2,452,376
SetupMgr.dll 10.0.22621.6625 13-Jan-26 16:42 1,165,712
SetupPlatform.cfg Not versioned 13-Jan-26 16:42 17,298
SetupPlatform.dll 1.74.22621.6625 13-Jan-26 16:42 10,212,296
SetupPlatform.exe 1.74.22621.6625 13-Jan-26 16:42 261,520
SetupPrep.exe 10.0.22621.6625 13-Jan-26 16:42 1,333,160
UpdateAgent.dll 10.0.22621.6625 13-Jan-26 16:42 3,602,336
upgradeagent.dll 10.0.22621.6625 13-Jan-26 16:42 3,464,576
winsetup.dll 10.0.22621.6625 13-Jan-26 16:42 3,022,752
WinSetupBoot.sys 10.0.22621.6625 13-Jan-26 16:42 83,840
WinSetupMon.sys 10.0.22621.6625 13-Jan-26 16:42 81,848
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 17,920
SetupPrep.exe.mui 10.0.22621.6625 13-Jan-26 16:42 18,432

References

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

Query words: Setup DU