Installing Oct 2026 update for W10 21H2 LTSC fails

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TanyaC

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Start NtLite, load base ISO 19044-1288, Go to updates, select downloaded 2026-10 KB5126657 update file, click apply, then process. When integration gets to 100% I get the error shown on image.

ntlite_error.png
 

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I get the same problem here on non-IOT LTSC 2021 en-GB. Tried it several times and same problem. Last month's update integrates just fine.
Integrating: KB5126657 - 2026-10 Windows 10 Security Update (ESU) 19041.7807.1.49 -> Windows 10 EnterpriseS 21H2 x64 - 10.0.19044.1288 (en-GB) - Error 0x80073713 - [14099] An advanced installer failed during setup or servicing.
The image has been damaged by an offline servicing failure and no further servicing is allowed.
Click to expand...
 
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They readded "Microsoft-Windows-Security-SPP-ExtendedSecurityUpdatesAI-Package" as part of "Microsoft-Windows-EditionSpecific-EnterpriseS-Package"
either intentionally, or by mistake

meaning, you cannot offline integrate KB5126657 to EnterpriseS, IoTEnterpriseS, EnterpriseSN

only EnterpriseG, EnterpriseEval, EnterpriseSEval remain exempted now
 
What a mess! Every month, you have to make adjustments, search, figure things out, and do things over and over again.
So much wasted time.
 
This was also an extremely annoying, painful issue to me. I tried to integrate the latest CU to the base IoT Enterprise LTSC 2021, and it failed no matter what. Just found out it was due to that ESU licensing blocking offline servicing.
I'm trying out the November update. I'm so glad offline integration is available again that it bring tears XD

Edit: successfully integrated! no more shitty reboots post-install, yay!
 
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Offline integration might not continue to be available when Enterprise LTSC 2021 ESU starts in 2027-02 :)

i don't think it's easy to separate EnterpriseS (real edition) from IoTEnterpriseS (virtual edition) on CBS packages level
 
abbodi86 said:
Offline integration might not continue to be available when Enterprise LTSC 2021 ESU starts in 2027-02 :)

i don't think it's easy to separate EnterpriseS (real edition) from IoTEnterpriseS (virtual edition) on CBS packages level
Click to expand...
If that's the case, would there be any workaround? Also, wasn't offline integration available already when ESU was ongoing? Will it be different this time??
 
bacgqtds said:
capturing the live installation in audit mode and generalizing with sysprep seems to be the only option...
Click to expand...
You say that like its a bad thing but in my opinion its the best option and is what i have been doing for a number of years now.
Install "all" updates live, nets 3.5 + 4.8/4.8.x all nicely baked in and ntlite works great on a captured image :)
 
16309 said:
You say that like its a bad thing but in my opinion its the best option and is what i have been doing for a number of years now.
Install "all" updates live, nets 3.5 + 4.8/4.8.x all nicely baked in and ntlite works great on a captured image :)
Click to expand...
well the result iso is technically the best, but that's too much of a hassle to me.
I prefer offline installation since it's way faster and more simple, while retaining almost all the benefits. Mainly because I format my windows at least once a month, and live install capture would just take too much time.. since I'll have to format my pc twice then
 
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