User Profile Synchronization Fails to Sync

Hello,

We have a SharePoint 2010 farm installation on a Windows 2008 R2 machine. I'm trying to sync the user profiles (Central Admin > Manage Service Application > User Profile Service Application > Start Profile Synchronization) from AD to update the new entries. Each time I run the sync (Incremental/Full) I get "An unexpected error has occurred." error.

Both "Forefront Identity Manager Service" and "Forefront Identity Manager Synchronization Service" are running and I have restarted them a few times. However, I cannot restart the "User Profile Service Application" (under Central Admin > Manage Service Application) as it shoots, "An unexpected error has occurred". Neither can I disable or run the timer job to run the sync; I get the same error.

There's not much information in the event viewer or the SharePoint log to troubleshoot this error. Although, I have realized that when I run the command: stsadm -o sync -ListOldDatabases (see attached) the last successful synchronization for the content databases was last month. I suspect this might be the issue?

I'd appreciate any help in this regard.

Thanks much.
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SasDevAsked:
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Justin SmithSr. System EngineerCommented:
Is this a new farm, trying to sync for the first time?
SasDevAuthor Commented:
No. We have had this farm structure forever and did not have synchronization issues earlier.
Justin SmithSr. System EngineerCommented:
Did you recently apply any SharePoint updates?
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SasDevAuthor Commented:
Nothing since Dec last year. And that was SP2 update for SharePoint. Everything worked fine after that.
Justin SmithSr. System EngineerCommented:
??  I thought this was SharePoint 2010?
SasDevAuthor Commented:
Ops sorry, my bad. It was a Hotfix for SharePoint: http://support.microsoft.com/kb/2352342
Justin SmithSr. System EngineerCommented:
Have you looked in your ULS logs?  

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sharepointguru14Commented:
if you open up forefront identity manager console what is the error there?
This can be found under C:\Program Files\Microsoft Office Servers\14.0\Synchronization Service\UIShell\miisclient.exe

Also make sure you take a look for any steps you may have missed or did out of order here: http://blogs.licomputersource.com/2010/07/23/installing-and-configuring-user-profile-synchronization-service-in-sharepoint-2010/
SasDevAuthor Commented:
Partial solution
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