Remove Office 2010 Shared Folder Sync
When you install Ofice 2010 and 2013 you get a extra option in your right-click menu to Sync Shared Folders.
I don't use this so I remove it, here's how..
Open regedit.exe
Start Menu -> Run -> regedit
Now in regedit browse to
HKEY_CLASSES_ROOT\CLSID\{6C467336-8281-4E60-8204-430CED96822D}
You can to go to
HKEY_CLASSES_ROOT\CLSID\
then Edit -> Find -> {6C467336-8281-4E60-8204-430CED96822D}
and rename it to backup.{6C467336-8281-4E60-8204-430CED96822D}
and you are done.