GFI MailEssentials fails to install with the following error:
Error 1402. Could not open key: UNKNOWN\Components\
Note that after the "
\Components\", there will be a registry key and subkey listed, which will appear as a long string of characters signifying the GUID of the installation component. This component can change depending on which one has broken permissions that are referenced during the installation.
- GFI MailEssentials
- All supported environments
Certain registry keys may have lost the correct permissions for the GFI MailEssentials installer to make changes to the keys.
Note: It is very important to make a backup of the registry before editing. Make sure you export a version of it in a secure location on your server before editing any keys.
- Open the registry. Choose Start > Run. Type
- Search in the registry for the key and subkey.
- Right-click the parent container registry key. Choose Permissions.
- On the Permissions for the dialog box that appears next, press the Add button and add in Administrator, Administrators, and System accounts.
- Back on the first Permissions for dialog box, click each account in the top list and make sure each has the Full Control = Allow and Read = Allow permissions.
- Click the Advanced button so that the Advanced Security Settings dialog box appears.
- On the Permissions tab, enable the checkbox named 'Replace all child object permissions with inheritable permissions from this object'. Press the Apply button.
- On the Owner tab, highlight the Administrators name in the lower list box. Enable the checkbox called 'Replace owner on subcontainers and objects'. Press the Apply button.
- Repeat steps 7 and 8 once more. This time around you should not get any errors about not being able to update the permissions on the child keys.
- Exit these dialog boxes by pressing the OK button. This will return you back to the main registry editor.
- Re-run the installer.