Csgina.dll error usually occurs during the uninstallation or installation of Cisco VPN. This error is accompanied with the below-mentioned error message or an error message similar to it and occurs because the application gets loaded before Windows.

Error message: “The Login User Interface DLL CSGina.dll failed to load. Replace or restore the DLL.”

This software makes changes in the Windows registry, switching off the fast user switching capability and causing the error. There are three different ways through which you can fix this error. Choose the one that is most appropriate for you.

Warning: 2 out 3 steps discussed here need you to make changes in registry. Do not edit registry unless you are completely comfortable doing so. Before adding or deleting information in registry, make a registry backup. For this purpose, you are advised to use a reliable and fast registry maintenance software application.

Solution 1

• Launch Windows in the Safe Mode
• Click Start>Run
• Type regedit in the Open box, and then press OK
• Go to HKEY_LOCAL_MACHINESOFTWAREMicrosoft
  WindowsNTCurrentVersionWinlogon
• Right-click GinaDLL in the pane on your right, and then select Delete
• Exit Registry Editor
• Restart Windows in the Normal Mode

Solution 2

Users who do not use a graphic user interface at Windows startup and are unable to boot in the Safe Mode should try this method.

• Load recovery console, and run these commands

CD System32
COPY CSGina.DLL OLDCSGina.DLL
COPY MSGina.DLL CSGina.DLL

• Click Yes
• Exit recovery console

Solution 3

If you use a VPN dialer (Cisco Systems), try this method.

Users find that they can no longer use Fast User Switching after they have installed Cisco VPN dialer. Further, every time a users tries to enable the former, an error message stating that this file has disabled two default features, Windows Welcome Screen & Fast User Switching, is received.

This error occurs because the VPN dialer from Cisco replaces the msgina.dll with its own dll file, csgina.dll. Msgina.dll is Microsoft Graphical Identification and Authentication file, and its removal lead to switching off of Fast User Switching feature.

To fix the issue, open Windows registry and do the following:

• Go to HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogon
• Look for GinaDLL in the right window and delete it
• Close registry editor
• Open Windows built-in uninstaller, Add or Remove Programs
• Select and uninstall your VPN dialer (Cisco Systems)
• Restart Windows

The above steps allow you to get rid of the listed error once and for all. If, for some reasons, you are unable to troubleshoot csgina.dll error using these steps, we recommend you contact Microsoft Support.