Windows 10: 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?

:)

 

How to use 7zip to open RAR files


7zip is opening zip files without problems. These are all for downloaded (not saved files).
When attempting to open RAR files the screen will only flash.
Uninstalling and reinstalling 7zip had no impact.
Downloading and installing winzip makes it the default application then RAR files open.
Un-installation of winzip making 7zip the default application allows it to open zip but not RAR.
This is an image of attempted manual right click.
It asks for the application to open the file. 7zip is selected and the screen flashes.
Switching browsers from Chrome to IE has no impact.

 

How to use 7zip to open RAR files


On this computer there is a 7zip program to open zip files.
In its current default configuration it is not able to open RAR files.
When attempting to open RAR files the screen will only flash.
Switching browsers had no change in result.
Win zip was downloaded but it has a short term free use period.
7zip is supposed to be able to open RAR files but is not supposed to be able to create them.
Viewing tools then options it has my user name displayed for RAR files.
I am the only user for this computer.
If the 7zip is changed to all users with apply there is a pop up access denied.
Does anyone know how to configure 7zip to open RAR files?

 

Zip File

Good Evening

I have this evening downloaded a zip file which is showing as a "zip Archive" in my Downloads.

I have not got a clue about zip files.

I am unable to open this file.

How do I get access to the contents of the file?

I am a complete novice so a simple step by step guide on how to access the contents of the file and use it would be a great help to me.

Regards