How To Install Windows 10 21H2 Update Manually

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Normally you have to wait for Windows 10 21H2 to become available via Windows update. However, if you want to install Windows 10 21H2 update manually, use the steps in this guide. Before you install Windows 10 21H2 update manually, it is recommended to have at least 10 GB of free space on the drive…

I have a non interneted windows 10 workstation it cannot have internet access based on the sensitivity of the information. I try and do an update to 21H2 by downloading the ISO and mounting it and running it. This all works until the end of the install after 100% it fails, I’ve attempted this three time with the same results, any advise on this.
thx
John

Hi @jadado,

Have you every updated this Windows 10 computer? Or better still, when was the last time you updated the PC with the ISO method?