As said many times, LTSC ISOs never get refresh ISOs, only when MSFT f**ks up like with Enterprise 2019 LTSC, it got 3 ISOs, First release 17763.1 (when used for upgrading it didn't move personal files to the upgrade), then first release 17763.107 (missing N versions) and finally they got it right and released 17763.316.
Thanks Spoiler: 19044.5608.250305-0902.21H2_RELEASE_SVC_PROD1_CLIENT_X64FRE_EN-US ============================================================ Running W10UI v10.50f ============================================================ ============================================================ Configured Options... ============================================================ Net35 Cleanup WinRE ISO ============================================================ Extracting .cab files from .msu files... ============================================================ 1/2: windows10.0-kb5050576-x64-ndp481_27ae4c3d2373fe4005f42b3a46db794d24196770.msu 2/2: windows10.0-kb5053606-x64_7415dee0978d4cdecfc284e53222dfa1d36d6894.msu ============================================================ Extracting files from update containers (cab/wim)... *** This will require some disk space, please be patient *** ============================================================ 1/7: defender-dism-x64.cab 2/7: windows10.0-kb5007401-x64_f1bf61d834bb8d9951c7efa23454643daae195b0.cab 3/7: Windows10.0-KB5011048-x64.cab [NetFx] 4/7: windows10.0-kb5046905-x64_caad951e96a4d7ef4da1a8e45055e7b96a19d1bc.cab [Setup DU] 5/7: windows10.0-kb5050199-x64_5c9d9cea71001edfbb308523a292b530d53ed415.cab [SafeOS DU] 6/7: Windows10.0-KB5050576-x64-NDP481.cab [NetFx] 7/7: Windows10.0-KB5053606-x64.cab [Combined] 8/9: Windows10.0-KB5052916-x64_inout.cab [SSU] 9/9: Windows10.0-KB5053606-x64_inout.cab [LCU] ============================================================ Mounting sources\install.wim - index 1/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Mounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Checking Updates... ============================================================ ============================================================ Installing servicing stack update... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.1288 Processing 1 of 1 - Adding package Package_for_ServicingStack_5547~31bf3856ad364e35~amd64~~19041.5547.1.1 [==========================100.0%==========================] The operation completed successfully. ============================================================ Installing updates... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.1288 Processing 1 of 3 - Adding package Package_for_KB5011048~31bf3856ad364e35~amd64~~10.0.9110.10 [==========================100.0%==========================] Processing 2 of 3 - Adding package Package_for_KB5007401~31bf3856ad364e35~amd64~~19041.1378.1.1 [==========================100.0%==========================] Processing 3 of 3 - Adding package Package_for_DotNetRollup_481~31bf3856ad364e35~amd64~~10.0.9297.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.1288 Processing 1 of 1 - Adding package Package_for_RollupFix~31bf3856ad364e35~amd64~~19041.5608.1.8 [==========================100.0%==========================] The operation completed successfully. ============================================================ Cleaning up OS image... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.5608 [===== 10.0% ] [==========================100.0%==========================] The operation completed successfully. ============================================================ Adding Defender update... ============================================================ Platform : 4.18.25020.1009 Engine : 1.1.25020.1007 Signatures: 1.425.160.0 ============================================================ Adding .NET Framework 3.5 feature... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.5608 Enabling feature(s) [==========================100.0%==========================] The operation completed successfully. ============================================================ Reinstalling cumulative update(s)... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.5608 Processing 1 of 3 - Adding package Package_for_KB5007401~31bf3856ad364e35~amd64~~19041.1378.1.1 [==========================100.0%==========================] Processing 2 of 3 - Adding package Package_for_DotNetRollup_481~31bf3856ad364e35~amd64~~10.0.9297.1 [==========================100.0%==========================] Processing 3 of 3 - Adding package Package_for_RollupFix~31bf3856ad364e35~amd64~~19041.5608.1.8 [==========================100.0%==========================] The operation completed successfully. ============================================================ Updating winre.wim ... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Mounting image [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.1 Processing 1 of 1 - Adding package Package_for_ServicingStack_5547~31bf3856ad364e35~amd64~~19041.5547.1.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.1 Processing 1 of 1 - Adding package Package_for_SafeOSDU~31bf3856ad364e35~amd64~~19041.5363.1.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.3562 [===========================97.3%======================== ] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.3562 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image File : C:\W10UI\winre.wim Image Index : 1 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Exporting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Adding updated winre.wim ... ============================================================ 1 file(s) copied. ============================================================ Unmounting sources\install.wim - index 1/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image File : C:\W10UI\en-us_windows_10_iot_enterprise_ltsc_2021_x64_dvd_257ad90f\sources\install.wim Image Index : 1 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Mounting sources\install.wim - index 2/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Mounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Checking Updates... ============================================================ ============================================================ Installing servicing stack update... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.1288 Processing 1 of 1 - Adding package Package_for_ServicingStack_5547~31bf3856ad364e35~amd64~~19041.5547.1.1 [==========================100.0%==========================] The operation completed successfully. ============================================================ Installing updates... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.1288 Processing 1 of 3 - Adding package Package_for_KB5011048~31bf3856ad364e35~amd64~~10.0.9110.10 [==========================100.0%==========================] Processing 2 of 3 - Adding package Package_for_KB5007401~31bf3856ad364e35~amd64~~19041.1378.1.1 [==========================100.0%==========================] Processing 3 of 3 - Adding package Package_for_DotNetRollup_481~31bf3856ad364e35~amd64~~10.0.9297.1 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.1288 Processing 1 of 1 - Adding package Package_for_RollupFix~31bf3856ad364e35~amd64~~19041.5608.1.8 [==========================100.0%==========================] The operation completed successfully. ============================================================ Cleaning up OS image... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.5608 [===== 10.0% ] [==========================100.0%==========================] The operation completed successfully. ============================================================ Adding Defender update... ============================================================ Platform : 4.18.25020.1009 Engine : 1.1.25020.1007 Signatures: 1.425.160.0 ============================================================ Adding .NET Framework 3.5 feature... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.5608 Enabling feature(s) [==========================100.0%==========================] The operation completed successfully. ============================================================ Reinstalling cumulative update(s)... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19044.5608 Processing 1 of 3 - Adding package Package_for_KB5007401~31bf3856ad364e35~amd64~~19041.1378.1.1 [==========================100.0%==========================] Processing 2 of 3 - Adding package Package_for_DotNetRollup_481~31bf3856ad364e35~amd64~~10.0.9297.1 [==========================100.0%==========================] Processing 3 of 3 - Adding package Package_for_RollupFix~31bf3856ad364e35~amd64~~19041.5608.1.8 [==========================100.0%==========================] The operation completed successfully. ============================================================ Adding updated winre.wim ... ============================================================ 1 file(s) copied. ============================================================ Unmounting sources\install.wim - index 2/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image File : C:\W10UI\en-us_windows_10_iot_enterprise_ltsc_2021_x64_dvd_257ad90f\sources\install.wim Image Index : 2 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Rebuilding sources\install.wim ... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Exporting image [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Exporting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Mounting sources\boot.wim - index 1/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Mounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Checking Updates... ============================================================ ============================================================ Installing servicing stack update... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_ServicingStack_5547~31bf3856ad364e35~amd64~~19041.5547.1.1 [==========================100.0%==========================] The operation completed successfully. ============================================================ Installing updates... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_RollupFix~31bf3856ad364e35~amd64~~19041.5608.1.8 [==========================100.0%==========================] The operation completed successfully. ============================================================ Resetting WinPE image base... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.5608 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.5608 [=========== 20.0% ] The operation completed successfully. ============================================================ Unmounting sources\boot.wim - index 1/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image File : C:\W10UI\en-us_windows_10_iot_enterprise_ltsc_2021_x64_dvd_257ad90f\sources\boot.wim Image Index : 1 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Mounting sources\boot.wim - index 2/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Mounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Checking Updates... ============================================================ ============================================================ Installing servicing stack update... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_ServicingStack_5547~31bf3856ad364e35~amd64~~19041.5547.1.1 [==========================100.0%==========================] The operation completed successfully. ============================================================ Installing updates... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.1288 Processing 1 of 1 - Adding package Package_for_RollupFix~31bf3856ad364e35~amd64~~19041.5608.1.8 [==========================100.0%==========================] The operation completed successfully. ============================================================ Resetting WinPE image base... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.5608 [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image Version: 10.0.19041.5608 [=========== 20.0% ] The operation completed successfully. ============================================================ Unmounting sources\boot.wim - index 2/2 ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Image File : C:\W10UI\en-us_windows_10_iot_enterprise_ltsc_2021_x64_dvd_257ad90f\sources\boot.wim Image Index : 2 Saving image [==========================100.0%==========================] Unmounting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Rebuilding sources\boot.wim ... ============================================================ Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Exporting image [==========================100.0%==========================] The operation completed successfully. Deployment Image Servicing and Management tool Version: 10.0.26100.1150 Exporting image [==========================100.0%==========================] The operation completed successfully. ============================================================ Adding setup dynamic update(s)... ============================================================ windows10.0-kb5046905-x64_caad951e96a4d7ef4da1a8e45055e7b96a19d1bc.cab ============================================================ Removing temporary extracted files... ============================================================ ============================================================ Creating updated ISO file... ============================================================ ISO Location: "C:\W10UI" 100% 5433MB 19044.5608.250305-0902.21H2_RELEASE_SVC_PROD1_CLIENT_X64FRE_EN-US.iso ============================================================ Finished ============================================================ Press 9 or q to exit. Source and updates used: Code: en-us_windows_10_iot_enterprise_ltsc_2021_x64_dvd_257ad90f.iso defender-dism-x64.cab (Updated: March 21st, 2025) windows10.0-kb5007401-x64_f1bf61d834bb8d9951c7efa23454643daae195b0.cab Windows10.0-KB5011048-x64.cab windows10.0-kb5046905-x64_caad951e96a4d7ef4da1a8e45055e7b96a19d1bc.cab windows10.0-kb5050199-x64_5c9d9cea71001edfbb308523a292b530d53ed415.cab windows10.0-kb5050576-x64-ndp481_27ae4c3d2373fe4005f42b3a46db794d24196770.msu windows10.0-kb5053606-x64_7415dee0978d4cdecfc284e53222dfa1d36d6894.msu
Tried win11 LTSC, Time to downgrade back to the old good and tested win10 LTSC. Are there currently any downsides, like issues with running apps, gaming? Xbox app appears to complaining about windows version, any other known apps not supporting old system?
You will probably have to rerun the activation script, if the build is 19044.2788+ it will accept KMS activation.
2021 IoT LTSC will get support until 2032, there will not be an ESU extension for it. Normal Windows 10 22H2 SKUs will get a paid extension for 1 year (customer) or 3 years (business). After the 3 years, LTSC updates will most probably be barred in these SKUs.
We really hope our dear developers on this forum, can make a "Bypass" like they did with Windows 7 and Windows 8.1. So we can get updates from LTSC (2032-01) to the "normal" SKU (22H2).
After Windows 10 Enterprise LTSC 2021 installation, how can I turn it to IoT LTSC and activate it ? Thanks for the assistance rendered!
The key is only for switching Editions, it's an official and publicly known default key. The switch to IoT is permanent. Nothing to do with activation.
I'm building a new PC and want to use Win 10 LTSC. A couple of years ago I downloaded what I think is LTSC 2021 [21H2] - file name ends with "d289cf96." I have it ready to go on a flash drive. Is this still the latest 10 LTSC version? Will it work OK with Intel Arrow lake CPUs and B860 boards/drivers?
There is only one ISO version released, build 19044.1288 (the ISOs can be found at the OP of this thread, the Updates Overview too.