Originally Posted by StuartV
Also of interest is that it says it only applies to BIS. I'm on BES. As I already posted, I tried just the workaround listed there. But, I only have one CICAL service book listed - Desktop [CICAL]. I don't have any other CICAL service books. I don't have any service books at all that say "Device Default", which is what my other calendar is.
Yeah, I'm on a BES too. I had multiple CICAL books to clean up and, like you, I still had dupes.
I had to manually delete Device Default entries. To make it somewhat less painful, try showing only that calendar (Menu > Select Calendar); turn off the delete confirmation; go to Agenda view; work out that thumb that's going to be hitting the delete key; get cracking.
It takes some patience, but that's the only thing I could do.
And that workaround is listed in multiple KB articles - I just happened to find the one for BIS accounts (which seem to be the problem, even on BES activated devices).