Update Error in Windows 10 21H1 ( OS Build : 19043.899 )

Question

While Updating to 2021-03 Cumulative Update Preview for windows 10 version 21H1 for x64-based systems ( KB5000842 )

The following error is displaying

Download Error – 0x800f081f

Kindly resolve it at your earliest 

Regards ,

Bhargava B U

Answer 1

Thanks, I don't have a flash drive big enough and live in Assisted Living, we are still Phase 1,  so I can't go shopping.  I might go online and do that later though.  

I thank you for all your advice and help.  I'll just tag along and see what happens, the error, doesn't, as far as I know, affect my other PCing.  

Thanks again.

Hi Caroline,

You can try with the installation ISO.  You can download either the insider ISO or the current 20H2 ISO that you can create with the Media Creation Tool 20H2. 

I just tried it and that worked too, on the PC enrolled in Beta channel.  Updated from 21H1 19043.899 to 19042.928 using the ISO 19042.631 which is the latest available on the public Win 10 download site.

Download the Media Creation Tool first and follow the instruction to create the windows.iso  (20H2 installation  ISO 19042.631).

Once you have that, right click and mount it and then start the setup.exe.

After you get to 19042.928 you can use Windows Update to get the enablement package and it gets you back to 21H1 19043.928.

This link is for downloading current public windows 10:

Download Windows 10 (microsoft.com)

Answer 2

I just don't have the confidence, I'm 78 and have memory problems.  

I read one reply that said the clean out the software distribution download folder and try to install it from the Windows Update Catalog, using KB5001350 and use the 20H2 instead of 21H1, which isn't in the catalog.

Do you think that might be worth a try?   

btw, it won't let me go back to a restore point, something about 10days 

Hi Caroline, 

I was not talking about a restore point, I was referring to a Backup of the system saved on a separate external or internal drive from which you could do a restore of the whole C: disk.

As far as installing from the catalog I don't think it will help in this case.

I know for sure the and update in place using the ISO file or the Installation media from a USB flash drive works.

From what I understand you don't have a 19043 installation media or ISO file.

Since they are all based on 19041 perhaps it can be done with the 19042 installation media, (assuming you have that),  but I have not tried to see if that works. The official MCT 19042 installation media is still at level 19042.631.

As for age don't worry, I'm your age too 😊.

Answer 3

@BHARGAVA B U, 

Hi, 

Clearly the fix described in the blog is not working, and just introduced a new error 0x800f0984.

• We have resolved an issue where some Insiders were getting an 0x800f081f error when attempting to install an early version of KB5000842. If you continue to hit an issue with the final version of KB5000842 update, let us know via Feedback Hub.

See FBH link below:

https://aka.ms/AAbx90o

You you want to workaround the problem you can use Update In Place using the MS Official Insider ISO 19043.867 that can be downloaded for the Insider Preview channel. (Don't use the Beta ISO because it is even an older build level, I believe .844)

If you start the setup from the ISO 19043.867 while online and letting it check for updates it will complete the update correctly and come up at build 19043.928.

I just tried this starting from a system at 19043.899 that had the original 0x800f081f and now 0x800f0984 errors.

The updated completed fine, see the results below:

Download Windows 10 Insider Preview ISO (microsoft.com)

Answer 4

still getting an error installing CU update, this time the KB5001330 update, getting the 0x800f0984 error:

Hi Carlos, 

I get the exact same error if I try to update from 19043.899 to 19043.928.

I kept a backup copy of 19043.899 specifically to test for the fix of Download Error – 0x800f081f, but now I get the new error as you show above 0x800f0984.

I got around this error in different different ways:

1. Starting from 19043.867 and bypassing the update to 19043.899 I went directly to 19043.906 and then to 19043.928
2. I did the update using an Installation ISO.
3. Starting from 19042.906 W.U. to 19042.928 then 21H1 enabler package to 19043.928.

It seems to work fine if you find a way that avoids the update to .899.

Answer 5

Hi Johnny, thanks for the help. But the update catalog does not show that update for my windows version 21H1 :/

Use the one for 20H2, there is no difference in kb5001330, only you have the Enablement Package as I do in RP. To let you know as well, I could opt out of Insider with this CU as currently on 19043.928 and did opt out, back to the Get Started button in Insider page. It did take 2 reboots to fully opt out.

Regards,

Edit: To clarify, 20H1, 20H2 and 21H1 are all based on 19041.1 with Enablement Packages.