====== Manually Uninstalling Rhino ======
//The following process applies to Rhino 4 and later (For Rhino 5, 6, 7 & 8)//
\\

=====Problem=====
During the startup, install or uninstall of Rhino, you get an error message like this:

//The feature you are trying to use is on a network resource that is unavailable.//
Click OK to try again, or enter an alternate path to a folder containing the installation package '<filename>.MSI' in the box below.

=====Cause=====
The Windows Installer cache cannot find a file or registry key required for uninstall. This is a common problem caused by the Windows Installer Service. The best solution is to use **Windows Install Clean Up** to thoroughly remove the previous installation. After you clean up the previous install, you will be able to reinstall Rhino and get a valid install.


Manually remove Rhino and the Windows Installer registration for the product.
You will need to have //Administrator privileges// on your computer to complete this.

====1. Run the Program Uninstall====
  - Close the Rhino application.
  - Go to Windows Search.
  - Type **App and Features** (or **Add and Remove** programs)
  - Find the **Rhinoceros x.0** program on the list, pick and select **Uninstall** button.
  
====2. Delete the Rhino install folder==== 
  - Browse to //C:\Program Files\//.
  - Delete folder **Rhinoceros x** or **Rhinoceros x Evaluation**.

====3. Delete the Rhino folders==== 
  - Browse to %AppData%\Roaming\McNeel\Rhinoceros.
  - Delete folder **x.0** where x is the Rhino version.
  - Browse to %ProgramData%\McNeel\Rhinoceros
  - Delete folder **x.0** where x is the Rhino version.
  
====4. Delete Registry Keys:====
  - Go to Windows Search and type **Registry Editor**.
  - Open the **Registry Editor**. 
  - Browse to //HKEY_LOCAL_MACHINE\Software\McNeel\Rhinoceros//.
  - Delete the **x.0** Key. For example, Rhino 4.0, 5.0 or whatever version of Rhino you are removing.
  - Browse to //HKEY_CURRENT_USER\Software\McNeel\Rhinoceros//.
  - Delete the **x.0** Key. For example, Rhino 4.0, 5.0 or whatever version of Rhino you are removing.

====5. Reboot====
  - Apply all Windows updates.
  - If you plan to reinstall, download the latest Rhino installer [[https://www.rhino3d.com/download|here]].

_________________

=====Optional=====
You should only do the following procedures if uninstall fails from the **Apps and Features**.
===Run Microsoft's Uninstall Fix===
  - Visit http://support.microsoft.com/mats/program_install_and_uninstall
  - Click **Run Now**.

===Cleaning up the Windows Installer Cache===
<color red>**Warning:**</color> The following procedure may result in registry corruption and a 1402 error next time you install software. <color red>**Only follow these steps**</color> if the above procedure did not allow you to install Rhino.
  - Download the [[http://files.na.mcneel.com/misc/WindowsInstallerCleanupUtility.zip|Windows Installer Cleanup Utility]].
  - Unzip the contents of WindowsInstallerCleanupUtility.zip to a "Windows Installer Clean Up" folder on your desktop.
  - Run **msicuu.exe**.
  - Scroll down to (All Users) Rhinoceros 5.0 WIP (or All Users Rhino 5.0 WIP x64) on 64-bit systems.
  - Click **Remove**.

If you followed these steps and then got a 1402 error, [[https://wiki.mcneel.com/rhino/error1402|these instructions may resolve the 1402 error]].