I just published a simple public website that anyone can use to redirect your users from the Software Center to the Company Portal.
Here’s how it looks in the Software Center:

It contains simple instructions for opening the Company Portal and a button that will open the portal directly from that page.
To add the page, simply edit the Software Center Customization in your client settings, add a new tab called “Applications” with a link to the website https://software-center-retirement.webflow.io/ and move it to the top of the list. Optionally hide the built-in Applications tab if you want.
I tried at home lab. The link don’t work for company portal. Tried on Win 10 and Win 11 WS.
You might have to check the URL
Did you try enabling the ‘Display custom tabs with Microsoft Edge Webview2 runtime’ option?
Yes I did.
I have another tab within software center that is my blog link which is working. The company portal link is still not working.
http://www.infotechram.com/index.php/2023/03/26/software-center-redirection-to-company-portal/
Very nice idea , thanks for sharing! I hosted an additional website on my CM to publish it. works very well . duplicable for any customers with co-management