I have the same problem with the HP iPaq 910. I'm syncing with ActiveSync on 1 PC and Vista's Mobile device center on the other. The only work around I've found is to delete the 2nd partnership, then rebuild the partnership... the first time to sync though you have to let it sync without actually syncing anything. After that you can sync contacts, etc. The issue is you have to be real careful about making changes on the device as your sure to lose something by deleting the partnership between syncs.
I'm still disappointed that after 10 years we still don't seem to have a realiable desktop sync situation. MS has done a great job with Exchange sync over the air, but still seem confused by the whole desktop thing.
It's kinda funny I am seeing this now. I've had the HTC StarTrek (Cingular 3125) for 1 year and 9 months. All this time, with the default WM5 it has synched fine between my work laptop (Toshiba tablet PC w/ XP Pro Tablet Edition) and my home desktop (homebuilt AMD64 x2 Dual Core w/ XP Pro 32-bit). Never a problem!
Last weekend I upgraded my StarTrek to WM6.1 from a cooked ROM image from XDA-Developers.com. I AM EXTREMELY HAPPY. It has worked phenomenally and THE ONLY problem I've noticed is I can't get it to synch to 2 computers anymore. It synchs fine to my work PC but I get the error when I try to synch to my home PC. Honestly, having it synch to my home PC is nice, but not critical, so I gave up after about a dozen tries. Now that I see it is a common problem I won't kill myself trying to get it to work.
Knowing now that this is a common problem I'll just sit back and wait for MS to release the patch .
1) I backed up both of my PST files. PC#1 and PC#2.
2) I deleted all partnerships on PC#1 and all partnerships on my device.
3) I deleted all contacts and calendar entries in PC#1.
a) dont panic, we backed up the pst in step 1.
b) i only sync contacts and calendar, so you'll want to delete all sync'd items.
c) to delete all calendar items, switch View -> Arrange By -> Current view -> By Catagory
then highlight the top entry and hit CTRL+A to select all, now hit delete.
4) Now I reconnected my device and re-established partnership. PC#1 done.
5) Delete all partnerships on PC#2.
6) Repeat step #3 on PC#2.
7) Repeat step #4 on PC#2.
Are there some steps missing (like restoring the PST files) or are you basically using your device as the master sync source?
AS4.5 has never worked with 2 PCs. It always says the current PC is new - delete an existing partner and make a new one!
The only solutions online involve hard resets - fun. No thanks.
Are there some steps missing (like restoring the PST files) or are you basically using your device as the master sync source?
Ya know, you might be right. I thought that when I re-paired my device that AS repopulated my calendar and contacts in Outlook. But it might be that I had to sync, then restore my backed up PST file, then sync again.
Sorry for my cloudy memory. Kids, listen to your parents when they tell you not to smoke that stuff.
AS4.5 has never worked with 2 PCs. It always says the current PC is new - delete an existing partner and make a new one!
The only solutions online involve hard resets - fun. No thanks.
I've been syncing two PC's, home and work, using Activesync 4.5. In two years I haven't had a single problem until the 6.1 update. At which point I started getting error 86000107. Then I performed the steps mentioned earlier, the basic premise was to "start from scratch", and my problem has gone away.
I'm not trying to defend M$. Outlook and activesync have their flaws, but syncing two PC's isn't one of them.
I had the same problem with my Samsung SCH-I760 after upgrading to WM 6.1. I went through some of the MS fixes ( https://connect.microsoft.com/feedba...634&SiteID=502 and other places on the net) and found that if I went to Options> and unchecked Tasks and then Notes, then disconnect from my # 1 PC. The reconnected and synked again I still had the same problem. I then went through this and unchecked the ones I had enabled (Contacts, Calendar, Email, Tasks and Notes). Then I enabled each one, one at a time between disconnect and re-sinking. After that it is working again between my desktop and lapton. It appears that in my case it was Task's that caused the problem.
A workaround for this problem is to de-activate the syncing of calendar and contacts, then re-enabling them one at a time. Bad thing is you have to do this every time that you have synced with another computer...