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#11
I'm sorry to hear that the link isn't present on your computer.
Have you tried the "Upgrade now" button on the Windows 10 page? Is that what caused problems for you?
My understanding is that KB5003791 is the enablement package for Win10 21H2. Apparently it works for several different Win10 releases and architectures.
Links for installing that KB manually are available in the first (updated) post in the thread
KB5005611 Windows 10 2004 19041.1266, 20H2 19042.1266, 21H1 19043.1266
Be sure to select the one intended for your CPU architechture (32bit, 64bit or Arm).