Applies to:
All products, releases 5.x and Up

 

Error 1905: Module Failed to Unregister (HRESULT -2147220472)

Applies to:
@RISK / DTS Tools

Issue

During installation or uninstallation, you may see the error:

Error 1905. Module C:\Program Files\… failed to unregister. HRESULT -2147220472. Contact your support personnel.

The error message may reference any file included in @RISK or DTS Tools.

Resolution

Follow these steps to fully remove the existing installation and reinstall the software.

Step 1: Reboot

Restart your computer before making any changes.

Step 2: Save Your License File

Locate and back up your license file. It will be in one of these locations:

• C:\Program Files (x86)\Palisade\System

• C:\Program Files\Palisade\System

Step 3: Remove the Palisade Program Folder

Delete one of the following folders if present:

• C:\Program Files (x86)\Palisade

• C:\Program Files\Palisade

Step 4: Clean the Registry

Important: Before modifying the registry, ensure you have a current backup.

1. Click Start, type regedit, and press Enter.

2. Navigate to one of the following locations:

   • 64-bit Windows:

     HKEY_LOCAL_MACHINE\Software\WOW6432Node
     

   • 32-bit Windows:

     HKEY_LOCAL_MACHINE\Software
     

3. Under the appropriate key, delete the Palisade subkey.

Step 5: Reinstall

You should now be able to reinstall the software successfully.

If the issue persists, contact support for further assistance.