Default email application doesn't recognize Outlook 2019

[daveh77415018]

just re-installed Adobe Reader DC, AND Outlook 2019, which is set as the default mail client on my PC.   Issue is, Reader does not see the install of Outlook 2019 as the default email application, and will not open a new email message with the PDF file as attached.   Worked fine with Outlook 2016, and also works on another PC that I just re-installed from scratch, and Outlook 2019.

[topshotrhit]

So you have 1 PC that DOES work with Outlook 2019?

I just ran into this issue today using a brand new Lenovo Win 10 1809 PC with Office 2019 preinstalled (store apps) and activated. The Help > Generate System Report function will open an Outlook message as will the "Send Link" button when using the Send as Attachment function (this was for the default Adobe Welcome PDF, not the PDF on the mapped drive we're trying to attach), but the "Send Copy" button will bring up the infamous and unhelpful "An error occurred while sending mail" message (regardless of which PDF I try).

Like yours Outlook is the default mail client in the OS, I uninstalled and reinstalled Reader DC and going into Edit > Preferences > Email Accounts just says "Default email application" rather than "Default email application (Microsoft Outlook)" like it does on a PC using 2016. Send as Attachment shows it as "Default email application (unknown)".

I should also note that I tried with the anti-virus disabled.

[daveh77415018]

This one actually showed "Default email application (Microsoft Outlook)", and still doesn't want to recognize the program.

[daveh77415018 · Accepted solution]

As I had expected.  it was the installation of Office 2019 that was the issue.   Had Microsoft tech support clean out all info pertaining anything to do with Office software on the PC.   Re-installed Office 2019, and the issue has been fixed.
Search in Outlook was messed up as well, and that has now be fixed as well with a clean install of the Office suite.

[topshotrhit]

Was Office 2019 pre-installed on your PC? I'm dealing with brand new Lenovo PCs that have it already loaded and we just activate with a key. Seems silly that I'd have to delete a fresh install to just to have to now download it and install again. Microsoft should provide more info on what the specific cause is (e.g., incorrect or missing registry entry?).