HP Remote Graphics Software 6.0 User Guide

1. Install the Sender on the HP workstation. If the RGS Sender is not installed or installs with
errors,
DO NOT perform the remaining steps. Doing so will put the computer in a state that
requires a complete re-installation of the operating system.
2. After the RGS Sender is installed, confirm that hprgina.dll exists in the C:\WINDOWS\system32
directory. The Sender installer copies hprgina.dll directly into the system32 directory.
CAUTION: If the hprgina.dll does not exist in C:\WINDOWS\system32, do not perform the
remaining steps. Doing so will put the system in a state that requires a complete re-installation of
the operating system.
3. Add the GinaDLL registry key if it does not already exist. If the GinaDLL key does not exist, the
Microsoft default GINA DLL (msgina.dll) is loaded by WinLogon. Adding the GinaDLL registry
key, and setting its value to hprgina.dll informs WinLogon to load hprgina.dll instead of the
default msgina.dll.
Adding the GinaDLL registry key is done using regedit, the Windows Registry Editor. Create the
key as type REG_SZ (a string type). The full path of the key is:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion
\Winlogon\GinaDll
4. Set the value of the GinaDLL key to the text "hprgina.dll". Confirm the spelling before closing.
Figure D-2 Addition of the GinaDLL key to the registry on page 163 shows the registry key
contents.
Figure D-2 Addition of the GinaDLL key to the registry
5. Add the GinaDllMode registry key if does not already exist. This can be done through the use of
regedit as well. Create the key as type RGS_SZ (a string type). The full path of the key is:
HKEY_LOCAL_MACHINE\Software\Hewlett-Packard\Remote Graphics Sender
\GinaDllMode
6. To actually enable Single Sign-on, set the value of the GinaDllMode key to the text "HprSso".
Confirm the spelling before closing.
Figure D-3 Addition of the GinaDllMode key to the registry
on page 163 shows the registry key contents.
Figure D-3 Addition of the GinaDllMode key to the registry
7. Restart the computer. The hprgina.dll module will be loaded by WinLogon when started.
Summary—If the GinaDLL key does not currently exist in the registry, the Microsoft default GINA DLL
(msgina.dll) is loaded by WinLogon. Adding the GinaDLL registry key, and setting its value to
hprgina.dll, informs WinLogon to load hprgina.dll instead of the default msgina.dll.
Manually disabling Single Sign-on in Windows XP
To disable Single Sign-on without using the RGS Admin Tool, delete or rename the value of the
GinaDLL registry key. If there is no other custom GINA module on the computer, simply removing the
GinaDLL key definition from the registry entry below disables Single Sign-on.
Easy Login and Single Sign-on 163