Windows 10: cant download zip files even though 7zip is downloaded

hello, I was trying to download a minecraft server from a server hosting site but whenever I click the download button the file doesn't download to a zip file but instead downloads into some other type of file (picture included) and whenever I open the file an error message pops up (picture also included).

:)

 

Unable to register 7zip to open zip files

You did try re-adding it to context menu after the reboot/ reinstall as per this post? It doesn't show up otherwise.

Unable to register 7zip to open zip files - Windows 10 Forums

 

Unable to register 7zip to open zip files

Well, a number of things happened.

1. Removed, rebooted and reinstalled 7zip.
2. In 7zip options I selected the preferred extensions to be recognized.
3. Windows registered these changes and recognized the file. The file properties correctly shows the file type, and so is the 'Open with'. But, it failed to add 7zip access in the context menu, without which one cannot zip a file.
4. So I uninstalled KB4462919, rebooted and re-installed 7zip and that didn't help either.
   
5. Then, Windows update complained about the uninstalled missing security update, and proceeded to reinstalled it along with some other updates.

So now I can unzip, but zipping a file is a complicated process.
P.S: I forgot to mention that uninstalling the security update also knocked out the browsers. Could not connect with either Cyberfox or Vivaldi.

 

Unable to register 7zip to open zip files

Windows 10 Pro 1803 will not register the 7zip app to open .zip files.
When it displays the app selection, 7zip is not even listed. It directs me to select the program from C:\Program Files which works but does not retain the selection permanently.

sfc /scannow and chkdsk c:/f/v both report everything is OK.

It is not listed in the context menu, where it existed in the past.
It won't register it through the file properties type selection.
Not in "Open with".
I searched the registry, and the extension .zip exists but it does not have an "open with" value.
How can I correct this?