Why do I see a "No apps available" message when launching RealVNC Connect from my web browser?

We are aware of an issue affecting Firefox users on Ubuntu 22.04 and later that prevents them from launching URIs from the website/portal, including:

• Launching the RealVNC Connect Setup app after using either of the Sign Up or Sign In options
• Signing in to RealVNC Viewer using Azure AD SSO
• Using the Connect button on the Device Access > Computers page of the RealVNC Connect Portal

When using one of the above, users will see the below window:

While we are working on a solution for this, users should open Terminal and run the below command then try their action again:

update-desktop-database ~/.local/share/applications