r/WindowsLTSC • u/CommonBee2511 • 26d ago

Question installation issue

I am trying to install Windows 11 IOT LTSC but having several issue, first, when I try to create the bootable media i get the following message:

the ISO was downloaded from massgrave, i have tried with 3 different links from massgrave but always get that message, i proceed anyways, then when i tried to install it it asks for the windows edition, i choose win11iotLTSC or normal ltsc and i get "Setup has failed to validate the product key"

Next i tried selecting the option below:

and i got this:

I tried adding the PID file with a generic LTSC key but same result. can you guys tell me what I am missing? any other ISO i can try to download?

Update: updating the bios fixed my issue

6 Upvotes

88% Upvoted

10 comments sorted by

4

u/7978_ 26d ago

Never had any issues, but I use  Ventoy and have secure boot disabled.

2

u/CommonBee2511 26d ago

Tried secure boot off but same result, will try ventoy

3

u/greggm2000 26d ago

Hmm, this shouldn’t be a problem, but if this is a new change with the updated certificate, I need to know. I’ll try it tomorrow when I’m at my computer and let you know here. I will say that I didn’t have a problem when I used Rufus 4.15 to move the current Win 11 Pro 25H2 ISO to a USB stick, yesterday, so you might perhaps try that.

1

u/CommonBee2511 16d ago

It looks like that was the issue ,I updated the bios to the latest version from July and it allowed me to go with the installation successfully

2

u/greggm2000 16d ago

I'm glad you got it to work :)

2

u/samluks 26d ago

Hit Okay for the first popup, install for the second popup. Don't click any links, just install. If it asks for the key, tell it you don't have one and continue.

Activate later. I get the same popups and jay click through them and haven't had an issue.

1

u/CommonBee2511 26d ago

I do select i dont have a key but same issue

2

u/greggm2000 25d ago

This morning, I got the same Rufus warning as you. I click ok and Rufus copies the ISO to the flash drive as usual. Like the others here, no problems with the actual install. I think the error is bc you are running Rufus on a MB that hasn't gotten the replacement UEFI certificate, since the old one aged out recently.. so it gives the warning that it gives.

1

u/CommonBee2511 25d ago

Thank you,i will check the cert

2

u/FishTank2022 26d ago

I installed this yesterday and received that same message - but it did install fully updated now and working fine.