Hello Jason,
In response - no probs with registry etc as I'm not going there lol. M/soft tier 2 did the other day and setting appeared correct with it noted as 1 (as opposed to 0, or 2) at end of string.
a) My own environment 2016 MS Outlook full version is: Version 2306 (Build 16529.20182 Click-to-Run)
b) In the business external environment ('Cloud') the Version is Microsoft Outlook 2016 (16.0.5395.1000) MSO (16.0.5393.1000) 32-bit
This, b) as mentioned is fine with no pop-up occurring. However this version does, under > Startup, have one box to tick or untick, i.e. Make Outlook the default program for E-mail, Contacts, and Calendar. BUT like a) above-own environment (which doesn't have any option/drop down at all, including or like this one just mentioned under b) it has no other options shown under Start Up to:-
- always open warning box to shut down previous etc unclosed - Registery 0 at end of string from memory, nor
- only open warning if in fact something is left open, or of course - Registry 2 at end of string, again from memory, or vice versa.
- never open pop up box etc which correctly following registry string does in fact show 1 under a) above.....but obviously doesnt work or do the trick!? for a) above.
Aside from Petes' work around of course by unticking the 'Store to Cloud' box under Options, General etc.
Hope this makes sense.
Cheers & Regards
Terry