Fixing "There is no application set to open the URL" popup for Chrome on macOS

instructions.md

Step 1: Write down the protocol

Take a note of the protocol portion of the URL your browser is trying to open. For example:

• For MS Teams, the URL is msteams://..., so the protocol portion is msteams.
• For Miro, the protocol is miroapp

This will be used in step 4.

Step 2: Close your browser

Make sure all windows are closed, as the preferences files can be overwritten on exit.

Step 3: Browser profile preferences

Open the browser profile preferences file in a text editor.

If you have a single browser profile, you will find them here: ~/Library/Application\ Support/Google/Chrome/Default/Preferences

I have multiple browser profiles, so I'll find them here:

• ~/Library/Application\ Support/Google/Chrome/Profile\ 2/Preferences
• ~/Library/Application\ Support/Google/Chrome/Profile\ 4/Preferences
• ~/Library/Application\ Support/Google/Chrome/Profile\ 5/Preferences

Step 4: Remove the protocol handler

Look for the protocol portion in the Preferences file, and you will find something like

"https://miro.com":{"miroapp":true},

It will look similar for MS Teams. Remove that section, and everything that's in the curly brace. If there is a comma after the closing curly brace, remove that as well. It has to be readable JSON, after all.

Step 5: Restart your browser

That should be it. If it isn't, you've either not closed the browser fully in step 1, or you've changed the wrong Preferences file in step 3.