Is your default email client the 64 bit version of Outlook? If yes, ProSeries is failing to automatically call that. I'm sorry for the frustration.
We have a fix that will be deployed Jan 20th. If you need it to work sooner than that, there's a work around but it's slightly technical. You can do it yourself, or you can call into support on Monday and they can walk you through this.
- Download these two files: MapiEmail64.dll and MapiExtended64.dll. Note your browser/anti-virus might warn you against downloading them.. they are safe.
- Copy them to the \32bit directory where ProSeries is installed.
- In File Explorer, Right click on each file and choose Properties. If it says something about it being blocked, unblock it. This is Microsoft being extra cautious. If you don't do this, it won't run
- Restart ProSeries (you probably need to this.. actually not positive)
