Exchange 2010 Activesync - One-way calendar sync

[guest]

I'm relatively new to the forums. I'm playing with Exchange 2010 Standard in the lab and I'm experiencing some problems with ActiveSync. From all devices (iPhones, Android-based and Symbian based), I can sync Mail and Contacts. There are no problems with that.

The twist comes when I want the Calendar. From Android and Symbian devices, the calendar does NOT download from Exchange, but if I create an entry on the calendar on the mobile device, it syncs that event back to exchange. This is my problem.

The iPhone successfully sync's mail, contacts and calendar. All systems appear functional on the iPhone.

Does anyone know how to resolve this problem? I have read that people have Android and Nokia devices working on full sync in Exchange 2010.

[guest]

This problem appears to be caused by corruption of calendar items.

It can be resolved simply like this:



Open outlook, switch to Calendar

Change View to "List"

Select All Items

Right click, Categorize, add a category

Wait for Outlook to Sync

Right Click, Categorize, Remove the Category



The phones will now sync correctly.

[guest]

Our IS department helpfully upgraded our exchange server overnight to exchange 2010.

After putting in the new details we hit a problem - the calender refused to sync and just came back with the unhelpful "an error has occurred"

We did a bit of googling and realised that quite a few other people were having the same problem with 2010. Most had placed the fault with HTC or Android - we were able to do a bit of digging and certainly with our problems we found a solution.

We tried to sync with another account on our phones (2 different Desires one orange branded one "normal") another test account synced fine - no errors. So that narrowed the fault down to our specific exchange accounts. A bit more googling suggested that possibly corrupted entry's in the calender were causing the sync to fail - or open ended repeating appointments (such as birthdays)

Our IS department found 1 corrupted entry in my colleagues account (a meeting that appeared to be set for some time 3072 ....) I deleted all of my repeating birthdays (they were all in my Google cal anyway). Once this was done both accounts started to sync with no problems.

So the short version - if you cant sync with exchange 2010 on your HTC Desire - find and remove those corrupted entry's and/or delete/edit open ended repeating appointments.

Hopefully this will be useful to someone who will be able to avoid the same couple of hours of panic that we had this morning!