Mailto links don't work

I am having trouble getting mailto links to work in pdfs created in indesign.

They used to, but now don't. On my computer, Windows 10, I use gmail as my default email.

Trying to think if there is something I have done to my computer, but don't think so. Don't think it's my browser since other mailto links I've found online seem to work fine.

Here's a sample.

Any help appreciated.