the newest cumulative update KB004296 isnt installing, shows (0x800f0990) error

[sanikarane29]

I am trying to install the cumulative update preview for windows 10 21H2 , but it shows Error encountered after a very long time of installing procedure. Error Code (0x800f0990).

[#2]

https://answers.microsoft.com/en-us/windows/forum/all/windows-update-fails-with-error-0x800f0900/b10...
Hello
see this:

[#3]

I tries that too but this didn't help/@A1 

[#4]

@sanikarane29 

Try report this issue using the Feedback Hub app.

Take a look at:

Troubleshoot problems updating Windows (microsoft.com) 

Fix Windows Update errors (microsoft.com)

[#5]

I'm getting exactly the same error message.
KB5004296 and also for "Feature update to Windows 10, version 21H2"