Error Code ED09C7 when scanning to the shared Network Folder

This means the computer name and or passwordare incorrect when creating the one touch key in the user name and password fields the user name and password must match exactly to the name and password on the pc

This is how I fixed it on a Konica Minolta Bizhub 200.

You have to change the default domain policy (on Server 2008, anyway).
Open the Group Policy Management Editor (Start >> Run >> gpmc.msc):
Right-click Default Domain Policy >> Edit >> Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Local Policies >> Security Options
Set both of these to Disabled:
Microsoft network server: Digitally sign communications (always)
Microsoft network server: Digitally sign communications (if client agrees)