Install error: "The older version of netvault cannot be removed" (4042505)

Occasionally, the Microsoft Installer (MSI) leaves a key in the registry folder HKEY_CLASSES_ROOT\Installer\Products that says NetVault is still installed. Unless you manually delete the key it created, the NetVault installer will fail with the message "The older version of NetVault cannot be removed"

Run "regedit" and navigate to HKEY_CLASSES_ROOT\Installer\Products
There will be a key that is not labeled other than a string of numbers. Delete the key.

NetVault: Backup should now be able to install without error.

NOTE: Technical Support does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to Microsoft Article ID 256986 “Description of the Microsoft Windows registry” at Microsoft Support.