On Windows Server 2008 and Server 2008 R2, after you uninstall a WIA Scanner via Device Manager and reinstall it, the scanner does not work

Consider the following scenario:

o On a Windows Server 2008 or Server 2008 R2 machine, uninstall a WIA Scanner driver via Device Manager
o�Then in Device Manager�you �Scan for hardware changes��or restart the computer to install the scanner again.

When you try to install the scanner again, the Administrators group does not have permissions to modify the registry key:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StillImage

Since the Administrators group does not have permissions, the DeviceID in the registry gets incremented after the reinstall finishes causing a mismatch of DeviceID registry keys.

To work around this issue, grant the Administrators group �Full Control� of the StillImage registry key.� Once the Administrators have permissions to modify the registry key, the DeviceID will remain the same after uninstalling and reinstalling the Scanner.