During the removal of Rhino, you get an error message like “Can't Uninstall - Feature is unavailable (path)”

Rhino 5.0

The Windows Installer cache cannot find a file required for uninstall.

Manually remove Rhino and the Windows Installer registration for the product.

1. Go to Windows Start menu
2. Select Control Panel
3. Select Add/Remove programs
4. Find any Rhinoceros 5.0 entries and select uninstall.

Note: you should only do the following procedures if uninstall fails from the Programs and Features section of Control Panel.

1. From the Start menu, click Control Panel, then click Administrative Tools
2. In Administrative Tools, double-click Services
3. In the Services dialog, scroll down to McNeel Update (32-bit) (On 64-bit computers, you may have McNeel Update (64-bit) instead, or both, depending on which versions of Rhino 5.0 you have installed).
4. Right-click McNeel Update (32-bit), then click Stop
5. On 64-bit Windows, also stop the McNeel Update (64-bit) service

1. Browse to C:\Program Files\ folder and delete the Rhinoceros 5.0 directory
2. Browse the C:\Program Files (x86)\ folder and delete the Rhinoceros 5.0 directory
3. Delete Rhinoceros 5.0 WIP folder also if you find it in either of the above directories.
4. Note that you might not be able to delete “RhinoShExt.dll”, that's ok, leave the system folder with that one file and delete everything else.

1. Open the Registry Editor:
   1. On Windows XP: From the Start menu, click Run, then type RegEdit and press Enter.
   2. On Windows Vista and Windows 7: Click the Start button, then type RegEdit and press Enter.
2. Browse to HKEY_LOCAL_MACHINE\Software\McNeel\Rhinoceros
3. Delete the 5.0 Key
4. Browse to HKEY_CURRENT_USER\Software\McNeel\Rhinoceros
5. Delete the 5.0 Key

1. Visit http://support.microsoft.com/mats/program_install_and_uninstall
2. Click Run Now

WARNING: The following procedure may result in registry corruption, and a 1402 error next time you install software. Only follow these steps if the above procedure did not allow you to uninstall Rhino.

1. Download the Windows Installer Cleanup Utility
2. Unzip the contents of WindowsInstallerCleanupUtility.zip to a “Windows Installer Clean Up” folder on your desktop.
3. Run msicuu.exe
4. Scroll down to (All Users) Rhinoceros 5.0 WIP (or All Users Rhino 5.0 WIP x64) on 64-bit systems.
5. Click Remove.

If you followed these steps and then got a 1402 error, these instructions may resolve the 1402 error.