Fix: Outlook Error Message “Either there is no default mail client or the current mail client cannot fulfill the messaging request. Please run Microsoft Outlook and set it as the default mail client.”

If you're running Microsoft Outlook you may have run into this error message. The Microsoft KB article says you can run into it when trying to send an email from a third party app. I've also read where Adobe Acrobat can cause it. For me, I'm running Windows 10 Technical Preview and Office 365. The [...]