Hello,
When I receive an email with a pdf and I double click on the pdf attachment I get a message about Office 360 not being installed on my computer. Clicking on 'open with' provides no options to select a program to open it with.

In the past I have been saving any pdfs then navigating to them using windows explorer and opening them that way. It would just be easier if I could figure out how to open a pdf straight from the email.

I'm using Windows 10 and Adobe is set as the default for pdf files.
Trying to update Opera Mail gives the message that Opera is up to date.