Windows 10 machine running Office 365.
User had Adobe Acrobat Reader DC installed on PC
Then installed another PDF viewer called Foxit Reader. He wanted that removed so I uninstalled it via "programs and features"
Now his Preview feature in Outlook no longer allows him to view PDFs - only happening with PDFs
1. Ensured that Adobe is set to be the default for all PDF file types
2. Verified that the Preview option in settings for Outlook was turned on
3. Checked registry key as per https://www.msoutlook.info/question/362
and it is correct.
4. Ran an online repair of office and rebooted the machine - still an issue.
Next I'm going to uninstall and reinstall Adobe to see if maybe it will pick it back up.
Any other ideas?