And is not a program or an app. You might have to set the email program manually but since you wrote Outlook.com, I think we need clarification on what app you have.
I keep getting this message even though I've done the file association for my email program. (Outlook.com):
"There is no email program associated to perform the requested action. Please install an email program or, if one is already installed, create an association in the Default Programs control panel."
After I close this message, I can still get to my email in the inbox of Outlook so it allows me to create, send etc. So, I'm confused as to why this message still comes up as I have Outlook 2016 as my "default email app" in "settings".
Your help would be appreciated.