Dialogic Voice Cards - Re-installation of Natural Access 9.0.2 may fail
Information
Dialogic NaturalAccess Software is use to create development and runtime environment for creating voice, fxs, conferencing and video application using the Dialogic CG Series Media Boards
Symptoms
A re-installation of Natural Access 9.0.2 32-bit under Windows 2008 R2 (or 64-bit) may fail.
The message "NaturalAccess 9.0.2 cannot install one of its required products" may be displayed.
Eventually the Natural Access 9.0.2 install may fail as follows:
Background
When this type of installation failure occurs, the Windows application event log may report system error 1638 on MsiInstaller
This error code means another version of the software already installed.
Solution
The solution to this issue is to remove some registry keys, as follows:
Run Windows registry editor
Move to '
HKEY_CLASSES_ROOT\Installer\Products'
You may see some registry keys and need to search 'ProductName' in each keys.
If 'ProductName' contains one of the following strings, you may need to remove the entire registry key.
DLCP Support
NMS-ISDN
NA Driver
NMS-CAS
NaturalFax
Fusion
NaturalConference
Exit registry editor