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rhino:error1921 [2016/01/14]
rhino:error1921 [2020/08/14] (current)
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 +====== Install Error 1921 (Rhino 5 for Windows) ======
 +> **Summary:** //How to fix the installation Error 1921//
 +> **Related installation help:** //[[installproblems|Troubleshooting Rhino 5 Installation]]//
  
 +=====Problem=====
 +The log file shows "Error 1921.  (1)Service 'McNeel Update Service 5.0' (McNeelUpdate) could not be stopped. Verify that you have sufficient privileges to stop system services."
 +
 +=====Answer=====
 +**//Solution 1://**
 +  * **Reboot Windows and run the installer again.** The Update Service starts when Rhino is launched so it will not be running after a restart.
 +\\ 
 +**//Solution 2://**
 +  * **Manually stop the service**
 +    - Run services.msc 
 +    - Find "McNeel Update Service 5.0"
 +    - Right-click and choose Properties
 +    - Change Startup type from Automatic to Disabled
 +    - Close Services
 +    - Restart Windows
 +    - Install Rhino
 +    - Run Services.msc again
 +    - Change the Startup type for "McNeel Update Service 5.0" back to Automatic
 +
 +
 +{{tag>rhino5installationerror_en}}