On 2017-08-01 15:42, Alan Bourke wrote:
CCleaner to me is the nuclear option with any problem.
It's more likely Win 10 trying to pimp it's crappy Windows Store apps.
Is it 32-bit Outlook?
Have you tried http://www.officetooltips.com/office/tips/how_to_modify_default_mail_client_...
Not sure if 32- or 64-bit Outlook. Yes, I did try the File Association in Default Programs/Apps a few times. It says "Outlook 2016" yet when I right-click on a file in Explorer and say "Send to Mail Recipient" it still says that nothing is defined as the mail program as that screenshot showed.