After a Windows 10 version update if you receive message You'll need a new app to open this ms-get-started link when you try to open Windows Tips app, see this fix.

If You'll need a new app to open this windowsdefender link message appears every time you open Windows Defender, see this post.

An experimental feature for Microsoft Edge Canary lets you open links in installed web apps. The option should make PWAs and web apps feel more native.