Originally Posted by Shubhankar Sanyal [MSFT]
I just registered to say thanks for this, I had precisely the same problem and this has fixed it for me.
One thing to mention is that the key "Parameters" needs to be created under "HKLM\System\CurrentControlSet\Services\CSC" before you can enter the DWORD value "FormatDatabase" under it.
People shouldn't be put off because the key "Parameters" doesn't exist, I was initially put off but after doing a complete backup I went for it and it worked perfectly.
Once restarted this new key is removed together with the annoying dead sync-links.
I'll remind people what you said though.. "However that would also blow away all other data in your cache from other servers/shares as well, including changes you made offline."
Many thanks again,