Error Code 800f020b is common for all the Windows Operating systems when you try to install the windows update. Windows Update error usually appears when Windows 10 or Windows update system is broken or there is network related issues and concerns. Usual causes for this error are communication failure over the internet with Microsoft update servers.
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How to fix Windows 10/11 Update Error Code 800f020b
Error 800f020b occurs when there is a problem with installing or updating Windows components or software. I suggest you to refer this post..
https://www.officelivesupport.com/windows-update-error-800f020b-fix/