I applied the changes in the initial step fully (checked all .NET boxes -- only one called .NET Environment was unchecked) but Update for Win10 V20H2 to all way to 100% install then screen read, cannot apply changes will revert back to original configuration. I then applied the method of cutting off firewall and additionally all protection (by Norton 360) with Defender as secondary protection. Went through download and install again through the 100% and got same message of failure and reverting to original system.
Going to read through all the other replies and see what they say in case your solutions had a revision in the comment section. Computer auto update is still trying to install the available update. By the way I got a error message of Error 0x800f0922. Not sure what to try next. Below is computer specification generally. Attempted up fate was Cumulative update Win10 V20H2, KB 5003173 which may help.
On a further note I noticed one site suggesting the problem is related to MS Chromium Edge. It indicated that the Edge folder would likely be empty so I looked in Program Files / Microsoft and found 2 files. The EDGE folder has only two files in it -- one called MSEdgeRecovery which is "empty" and the other is Edge.dat which does not open. No other MS Dege files at all. So I went to start menu and clicked on MS EDGE program and it just hesitates, blinks on screen with nothing and goes back to desktop. Apparently EDGE has been uninstalled -- maybe during the attemt to install the V20H2 update itself. It has been working until today.
I went Settings/ Apps/ Edge and selected Advanced Options. The first option is "Repair" which I clicked. It brought up the WAIT sysbol and 1 second later says repair complete. So I just assumed that did not work as nothing takes a second on a computer except to get a virus. The second option was to "RESET" MS Edge so I clicked on it. Got the Waiting symbol which lasted for a minute. Then said Reset complete. Still cannot open MS Edge from Start Menu Programs and let the Windows Update proceed once again with the download and install of the Win10 V20H2 update. Long wait, reboot several times, waiting as usual and then finally FAILURE AGAIN. Message was couldn't complete the updates -- undoing changes to revert back to original state.
Looked to "UNINSTALL" Edge but cannot find a method of getting to it since it is part of the operating system I suppose. Try to access New Download of MS Chromium Edge for Win10 but (using Firefox since Edge is not working) it takes me to Install Edge Now button and I click on it and nothing happens.
I am at loss and frustrated since I am seeing the next option is to "Reinstall Windown 10" using the Create Media Tool. Any thhoughs of hope?? Maybe a way to remove reminants of EDGE and a download link that will not freeze up while using Firefox.
OS Version: Microsoft Windows 10 Home, 32 bit
Processor: Intel(R) Pentium(R) D CPU 3.00GHz, x64 Family 15 Model 4 Stepping 4
Processor Count: 2
RAM: 3325 Mb
Graphics Card: AMD Radeon HD 5450, 1024 Mb
Hard Drives: C: 464 GB (334 GB Free);
Motherboard: Intel Corporation, D955XBK
Antivirus: Windows Defender, Disabled