After the update still got issues... I did a clean install, but same.
The first outlook client connected fine (but I got a bunch of Synch Log errors)
23:24:07 Error in folder 'Conflicts'
[...]
Hello,
If you performed a clean install, then
you also need to create Outlook profiles again to sanitize the cached mode data and prevent Outlook to use mismatching sync data or recreating root folder (as exposed in the logs you provided).
Therefore the problem you encounter is unrelated to the issue you exposed in the first place. It surely requires some additional sanity checks in the fxics code along with potential provisioning changes to make sure Outlook understands this is a different server and therefore discard the existing info or warn the user. However one bug at the time.
In the meanwhile, shall I ask you to perform a new test with fresh Outlook profiles? You should not hit the last issue again and we will be able to confirm whether the sharing bug is fixed or not.
I will schedule some tasks related to information gathering (logs, dump) so we can retrieve more advanced data set and use the collected information to investigate issues in-depth and to provide better hotfix, defensive code, sanity checks etc. I will keep you posted to this regards, hopefully on short (reasonable) notice.
Br,
Julien.