Overview

GFI LanGuard fails to install or upgrade with the following error message:

Error 0x80070002

Environment

• GFI LanGuard 9.0

Root Cause

The previous GFI LanGuard installation failed to remove all the old registry keys.

Resolution

Note: Please perform a backup of the registry prior to applying any changes.

1. Delete the GFI LANguard NSS Service in HKLM\System\CurrentControlSet\Services\gfi_lnss9_attservice
2. Delete the product name from Add/Remove Programs: go to HKLM\Software\Classes\Installer\Products\<GUID> and click on each GUID and look for the one corresponding to ProductName=GFI LANguard 9.0.
3. Delete the GFI LANguard NSS MSI uninstall key:  go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{<ProductGUID>} and click on each GUID and look for the one corresponding to ProductName=GFI LANguard 9.0.
4. Delete the GFI LANguard N.S.S InstallShield uninstall keys:
   • Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InstallShield_{<ProductGUID>} and click on each GUID and look for the one corresponding to ProductName=GFI LANguard 9.0.
   • Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\InstallShield Uninstall Information\{<ProductGUID>} and click on each GUID and look for the one corresponding to ProductName=GFI LANguard 9.0.
5. Delete the GFI LANguard NSS key located in HKEY_LOCAL_MACHINE\SOFTWARE\GFI\LNSS9
6. Delete the per-user keys:
   • In the registry editor open HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData. Here you will find one or more nodes with the user's SID. For example, the Administrator's would be S-1-5-18.
   • Under each user SID listed, expand it down to the Products > <GUID> > InstallProperties and look for the <GUID> that contains the DisplayName property value of GFI LANguard 9.0.
   • Delete the <GUID>.
7. Reboot the server.
8. Delete the GFI LANguard NSS directory.