Windows 10: Should I be able to run update 21H2 on my Windows 10 PC?

My Synology RT6600ax router with Threat Prevention is blocking a couple of things when the Windows 10 update 21H2 is trying to be applied. What it sees coming into the PC is:ET EXPLOIT Possible CVE-2016-2211 Symantec Cab Parsing Buffer Overflow drop http $EXTERNAL_NET any -> $HOME_NET any msg:"ET EXPLOIT Possible CVE-2016-2211 Symantec Cab Parsing Buffer Overflow"; flow:established,from_server; file_data; content:"4d 53 43 46"; depth:4; byte_jump:4,8,little; isdataat:1; reference:cve,2016-2211; reference:cve,CVE-2014-9732; reference:url,bugs.chromium.org/p/project-zero/issues/

:)

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.

 

Windows 10 version 21H2 update showing in Windows update when Windows 11 is installed

I was not able to install Windows 10 version 21H2 update when running Windows 10 - I tried a bunch of troubleshooting steps and nothing worked. In the end I decided to install Windows 11 in the hopes this problem would go away. Now in Windows Update I still see Windows 10 version 21H2 update!! How do I get rid of this?

 

KB4023057 Version 21H2 appears in Windows updater for a moment

Hi

In Windows Update KB4023057 Version 21H2 appears and it wants to downloading but stops immediately at 0% and disappears.
Under View update history the update appears as Successfully installed on 9/9/2021.

I can manually check for updates and the update appears again for 2 seconds.

I run the Windows 10 Update troubleshooter. Didn't found any issues. Wanted to uninstall the update but it isn't listed under Uninstall Updates in View Update History.

Not sure if relevant; As Optional quality update available is cumulative preview for 21H2 (KB5007253). Usually I don't install optional updates.

Any suggestions?