This solution works for me. Tested it by soft-resetting, and resync, no more that error.
Thanks
Thanks
I just did a quick search for error 86000107 and a few people solve the problem by doing this:
Uncheck all items in activsync then connect / sync.
Check and re-sync the items 1 at a time.
The problem appears to recur when tasks are selected for syncing. I haven't had this problem myself but have had something similar with syncing notes which I've resolved in a similar manner.
Hope this helps.