Public Service Announcement
For years my customers were using Shared Calendars and the Set Regarding capability to Track appointments into Dynamics CRM on other user's calendars.
This was useful in a delegate type role, like an assistant was to Track in all Appointments on an Adviser's behalf.
This capability is not well documented (despite being a supported feature by Microsoft).
Suddenly close to the release of CRM 8.0 or 8.1 we started having lots of issues with this.
When USER A would open a shared calendar of USER B and open an appointment the Set Regarding button would not appear.
We found a fix for this new issue and since have verified it works well if you are having a problem with some users.
For USER A, we need to untick the "Download shared folders" tickbox in their primary mailbox Cached Exchange Mode Settings:
*This post is locked for comments