You are right. I would have expected, that every machine hast its own Device ID.
But as far as I can see it is stored here:
Outlook: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Profiles\9375CFF0413111d3B88A00104B2A6676\00000002\EAS Device ID
Mail App: KHEY_CURRENT_USER\Software\Microsoft\ActiveSync\Partners\DeviceID
I have no idea how I could exclude these keys from syncing.
Your idea, to include the *.ost files in the profile might work… but than I have quite a huge amount of data to sync everytime.
And it doesn’t seem to be a fancy solution either, as its just the opposite of what ActiceSync does: just syncing chances.
And for the MailApp there is no setting for changing where data is sored at all…
I can’t belive that this is how MS indetened it to work…
What I thought about: Using different profiles on each machine.
But even here I haven’t found any setting for selecting the right profile per machine.
And without that, I would have to choose the right one on start… and making a mistake here would result in the same mess like now.
If anyone has some good idea… let me know… played arounf with this now for hours.