Hi, I'm a total newbie when it comes to PPC. I've installed Activesync according to instructions and even got it working fine to sync outlook information (nothing big - only address, calendar and tasks). Next day, when I plug in the hx4700, the Activesync gave me an error: Synchronization failed. There was no other error message, and I don't even see the Address/Calendar/Tasks listed below. However, it says "Connected". I troubleshooted by doing the following after reading this (http://www.cewindows.net/faqs/activesync/syncerrors.htm): 1. Soft reset the PPC device - same error 2. Deleting the partnership and recreating another - same error 3. Disabling all the options and try to troubleshoot by enabling one by one? didn?t help since it still failed 4. Hard reset the PPC device *ouch* - same error 5. Check whether it was due to Firewall or WinXP SP2 and disabled firewall. - same error 6. Check whether my repl.dat is still there - Yes. 7. Uninstalling Activestink and reinstalling, then re-setup the partnership Finally it worked! But few hours later, I plugged in my PPC and to my horror, activesync reported the "Synchronization failed" again!! I'm really at my wits end and ready to pull out all my hair and ship to Bill. I'm not a very technical person, so I hope someone here can help. I'm running activesync 3.7.1. Thanks!