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Sorry, I should've removed the message about Update Assistant, it won't solve your problem. Please test the alternate solution and let me know what you got.
My Windows 10 Version 20H2 will not install the update 0x80004005.
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Anonymous
Have tried 3 times. Message on update page says it did not install and I may try again. This is not a new install. Have been using for couple of years.
Windows for home | Windows 10 | Windows update
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141 answers
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Anonymous
2020-11-06T23:55:21+00:00 Didn't work. Attaching screen shot.
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Anonymous
2020-11-09T14:52:42+00:00 My SoftwareDistribution file reports 16GB size, but I don't see it with Explorer. Deleting the file takes a long time and deletion hangs on 99%.
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Anonymous
2020-12-16T13:32:41+00:00 Hello,
I have tried everything to install 20H2 with no success. I have ran DISM.exe /Online /Cleanup-image /restorehealth followed by sfc/scannow and then used the update assistant. Is there anything else I can do? Thanks from Howard
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Anonymous
2020-12-16T21:47:23+00:00 I have gone thu everything. Deleting Software Distribution, rebooting, downloading and installing the 20H2 feature etc. But, even though it all runs without an error (even config on reboot) it gives an message that the update could not be installed and when looking at it says everything is up to date but in the history it says it failed.