Windows 10 ARM Preview is No More...

So if I'm not wrong, there is no legitimate way to get the W10 ARM file anymore as of September 16, 2021?

If I am, how do I find it?

 

You are incorrect. First you have to join the Windows Insider Program, and then go to this URL to download the OS --
https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewARM64?wa=wsignin1.0

 

But that is only windows 11, not windows 10 now

 

True - but Windows 11 is where you'll need to go if you want an ARM OS. MS isn't offering Windows 10 on ARM any more.

 

Damn, I needed it for an assignment

 

You can still find build 21390 (the last Windows 10 build) on uupdump.net. I think you need a previous Windows 10 version to create an iso, though. What I don't know is if that previous version must be able to actually run on an M1. If that is not the case, you could download the Windows 10 iso that is still available to Insiders (I think it is build 19044) and create an 21390 iso with the download from uupdump.

 

Trying to get an ISO ARM

 

Hey Carlos, i am also using a MBP M1 and wanted to run Windows 10 - not Windows 11 in Parallels.
Can you please give me exact information, how you received the correct files from UUPDump and what you did after downloading? I have tried and downloaded a few files but after i had them downloaded to my local disc on my Win10 64 Bit Office PC - i could not create an image. I am new to ARM and never downloaded files from UUPDump.
Maybe you can give me some good advice or a link to Win10 (DE - German would be best, but EN is also fine) that ist working for me.
Do i have to download the files and create the ISO file from an ARM based system or is my 64 Bit system in Office ok for the job?
Thanks so much in advance for helping me
Michael

 

I wouldn't bother downloading Windows 10 files from uupdump.net. While you can still download files for the last Dev Channel build (21390), that build will expire at the end of the month. Since there are no Beta Channel, Release Preview Channel or Retail/OEM builds available that can run on an M1 Mac, Windows 10 on M1 is effectively dead.

 

Thanks for your answer - i have no problem with downloading files from other sources than Microsoft Insider Pages - my problem is that i tried a lot of Win10 ARM files from uupdump.net in my x64 Maschine to download and build an ISO file but the script never succeded and no ISO was built.
So are there any Images that can be used for a longer period than the end of the month?
How do you handle Windows10 on Apple M1?
Has anyone a working ISO or even vhdx file and can share it?

 

Yes, that's right...W10 is dead.

 

I'm making an ISO in German language....wait

 

Not for Windows 10. You will have to use Windows 11. I wrote a short explanation about building an iso for the current Retail/OEM build of Windows 11 here. Maybe it helps.

 

21390.2025.210603-0312.CO_RELEASE_SVC_IM_CLIENTMULTI_A64FRE_DE-DE.ISO
Uploading to Onedrive...

 

Here you are.
https://1drv.ms/u/s!AmjOsDCWdBwJuJwkkRqtfqpk1o76hA?e=Jr1pmM

 

uupdump.net search "21390"
Windows 10 Insider Preview 10.0.21390.2025（co_release）arm64
create download package
another windows machine "uup_download_windows.cmd" double click
iso image file move to m1 mac
parallels desktop install assistant last click and F2 key (Press F2 key as soon as you click)
BIOS secure boot configuration setting "attempt secure boot" check to remove
and continue
i'm sorry for my poor english, i'm japanese.

 

Thank you so much!!!!!
I will try later to install! Will this Windows 10 also die in a few weeks?

 

Yes, it is the same build.

 

No need to apologize, your English is fine.
More importantly, your post means that build 21390 might not expire at the end of the month. I thought all Windows 10 builds I used were rs_prerelease which will definitely expire. Build 21390 as a co_release build might continue to work, though. The expiration notice only mentions rs_prerelease.