Can't Active Sync - Need Help!!!

[DLCPhoto]

I have had no problems using Active Sync with my VZW TP2, Windows Vista Home Premium 64-bit, Windows Mobile Device Center 6.1.6965.

Just tried this morning, and receive the following:

"Synchronization cannot be started because you are not able to log on to the network and access information. Restart your computer and synchronize again. If the problem persists, contact your network administrator."

I upgraded NIS 2009 to NIS 2010 yesterday, so thought this might be the problem. I temporarily disabled both the Firewall and the AntiVirus, but no difference.

Internet searching showed a possible problem with Outlook 2007 - did a diagnostics through its help menu, 1 problem was allegedly fixed, rebooted, no joy.

I removed the Partnership, WMDC tried to start when I next connected the TP2, but nothing ever happened.

I also upgraded IE7 to IE8, but am doubtful this is related.

I also had to do a hard reset on my TP2 to try and fix a screen alignment problem it had developed, used SPB to restore everything, so doubt that is related, but thought I'd mention it.

I am at a loss. I have a drive image of my OS partition from a few days ago, but I'd prefer not to have to use that if possible, and instead identify where the problem is and 'surgically' correct only that.

Any ideas greatfully appreciated.

[DLCPhoto]

Update, still no joy:

I used the original Outlook 2007 CD to do a "repair" to my installation.
I uninstalled WMDC, rebooted, reinstalled.

Reconnected the TP2, drivers were successfully loaded, WMDC fired up, connected with the device, but when trying to sync, it failed with the same error message.

When I check within WMDC, I find these error messages:

Sync Error Notes: attention required
Sync Failed Sync failed

One said "Active Sync Encountered a Problem on the Desktop"

Windows Explorer shows both the device and storage card, and I can read/write from them, so Windows is seeing the device just fine. It seems that WMDC is having the problem.

Could it be my TP2? Something funky in the Hardset/Restore using SPB Backup?

This is a major problem, and I hope somebody here can provide some insight or suggestions.

[shadywayproductions]

this might be some help to you, i noticed that my tp2 sync's with my vista no problem but to my xp machine's (and it just started doing this too) it would not connect. (i understand that u are running vista but it might be something to do with the 64 bit system) there is an option to turn off (faster transfer?) in the settings for sync-ing on the tp2 maybe check that out n see if that works for you., goto (on the pda) settings connections usb2pc and UN check the box under activesync and give that a try.

hope this helps.

[DLCPhoto]

Thanks for the reply - in my searching for solutions, I came across that, and have tried it both with and without that "faster" checkbox checked, but same result.

Still searching...Seems like quite a few have had this issue in the past...

[DLCPhoto]

Wirelessly posted (XV6875 Opera/9.50 (Windows NT 5.1; U; en))

Well after 10 hours and innumerable wild goose chases and reboots and phone restores, I think I've fixed it.

It looks like there were some duplicate Notes (I don't know how they got duplicated) and this is what was srewing things up. I fixed this, it synced once successfully, and then it screwed up again!!!

This time I found some Contact duplicates, eliminated those, and it synced correctly again. I'm almost scared to try again.

All stinking day spent fixing this!!!