Upgrading Windows 10 v1607 to v21H2 – How??

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Hi,

I am attempting to bring a decent top-end HP desktop machine into the most recent age of Windows 10, namely v21H2.
Currently the machine is running Windows 10 Pro v1607 64bit and will not accept any 21H2 ISO install on bootup or any install using the setup file in the upgrade install package.

Is there some pre-requisite for getting from 1607 to 21H2, if so what might it be and how does one go about doing it.
I have a bunch of DVD’s with various back issues of Windows 10 1703  / 1909 / 2004 / 21H1 plus latest 21H2.

Doing a new clean install is not a good option as this is a business machine in daily use by a relative who is a design and build achitect with many years of  structural plans, drawings and important heritage business data stored on the machine plus complex draughting / drawing applications none of which we can afford to mess-up or lose.

Can anyone advise on the route and procedure for getting safely from Windows 10 1607 to 21H2 ??

Many thanks in advance for any assistance offered.

Best regards,

Gordon (UK)

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Gordski wrote:

Currently the machine is running Windows 10 Pro v1607 64bit and will not accept any 21H2 ISO install on bootup or any install using the setup file in the upgrade install package.

Error message?

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Error  message ?

Just says you can’t upgrade Windows 10 using ISO USB or DVD. Copy installation files and run from inside Windows . . . or words to that efffect.

Copying installation files and running setup does not work either.

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Gordski wrote:

Currently the machine is running Windows 10 Pro v1607 64bit and will not accept any 21H2 ISO install on bootup or any install using the setup file in the upgrade install package.

What sort of license and version does you friend have ? Enterprise / LTSB ?
Have you tried Windows 10 Update Assistant

Your friend should create a full image backup on an external USB HDD before starting any install.

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Pro was mentioned.

1 user thanked author for this post.

Alex5723

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Standard Windows Professional License

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Use Windows Update Assistant………….
That’s how I ccreated the ISO DVD and USB install package in the first place.

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The VERY FIRST thing you should do is make a full disk image, followed by file/folder backup of the data. Along with this, you need a bootable Windows Recovery CD/USB and a bootable Rescue disk made with the backup/imaging software.
If you don’t, you may find you have lost everything if the upgrade fails.

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Coldheart9020

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I have all five, USB / DVD ISO’s, Data backup, clone of full system  on USB HDD and Windows 10 – 1607 Rescue / Recovery DVD

Is there not some other pre-requisite like service stack update(s) or other stuff to add / install when making the quantum leap from W10 1607 to 21H2 being as Windows Kernal is different in Win 10 2004 and above?

Where do we go next?

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Gordon Insley wrote:

Use Windows Update Assistant

Don’t create, use the tool to upgrade online !!

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I take it that would be the upgrade this computer online now option.
That sounds like a great plan, I will give it a go and advise on the result.

Thank you and best regards,
Gordon.
(Ps. I dont know why these posted messages show me as a guest, but I am actually an Ask Woody fully fledged Member).

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Since Windows 10 1607 Microsoft has put a lot of update blocks due to hardware, drivers, software incompatibilities. You should check them out

https://www.bleepingcomputer.com/news/microsoft/windows-10-2004-upgrade-may-be-blocked-due-to-old-graphics-drivers/

https://www.bleepingcomputer.com/news/microsoft/microsoft-fixes-windows-10-2004-bluetooth-and-intel-gpu-issues/

https://www.bleepingcomputer.com/news/microsoft/microsoft-shares-workaround-for-windows-10-conexant-driver-issues/

https://www.bleepingcomputer.com/news/microsoft/windows-10-upgrades-blocked-if-using-old-versions-of-avg-avast/..

Running online upgrade you should choose ‘keep apps and data’..

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Gordski wrote:

I take it that would be the upgrade this computer online now option.

When you click the blue Update now button, it’ll download a file called Windows10Upgrade9252.exe

Simply run it to start the upgrade process.

If that also doesn’t work, you can go to the UUP dump website and download an Aria2 script to create ISO’s for older versions of Win10 using Microsoft’s official servers and try doing “incremental” upgrades to get to version 21H2.

Their site provides scripts for every version of Win10 from 1709 thru 21H2 so you could jump from 1607 => 1709 => 1809 => 1909 => 20H2 => 21H2 if necessary.

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There has been more than two years of Windows system change and the upgrade system cannot or may not cope with the differences greater than that. The incremental jumping method could also work for you, there was success upgrading from 1607 to 1809v2 (the good October release).

Please acquire copies of all of the computer’s device drivers available to reinstall in case there might be issues afterward.

HTH

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