====== Rhino 5: Error 0xc000007b ======

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**Problem**

Rhino 5 64-bit cannot run because of **Error 0xc000007b**.
{{http://wiki.mcneel.com/_media/rhino/5/0xc000007b.png?450}}

**Cause**

Windows calls a 32-bit DLL under //C:\Windows\System32// when Rhino 5 64-bit runs.

<color #999999>32-bit DLLs should not exist in the System32 folder on 64-bit Windows systems. It may be mistakenly installed by a 32-bit program's installer.</color>


**Solution**
  - Download Dependency Walker for x64 from http://www.dependencywalker.com
  - Extract the files in the zip file you've downloaded to a folder.
  - Run **depends.exe**.
  - Open Rhino 5 64-bit's shortcut icon on your desktop.\\ <color #999999>C:\Program Files\Rhinoceros 5 (64-bit)\System\Rhino.exe is opened.</color>
  - Click the header of the **CPU** column to sort the DLLs with their CPU type.\\ {{http://wiki.mcneel.com/_media/rhino/5/k01376b.png?600}}
  - Find the x86 DLLs.\\ **Note:** **msvcr100.dll** and **vcomp100.dll** have been reported to cause Error 0xc000007b. It may happen with a different DLL on your computer.
  - Press **F9** or select **Full Paths** from the **View** menu. 
  - Find the paths of the x86 DLLs.
  - Delete the x86 DLLs under //C:\Windows\System32//.\\ <color #999999>There's most likely only one x86 DLL found under C:\Windows\System32. Don't delete the x86 DLLs outside of C:\Windows\System32.</color>
  - Install [[http://www.microsoft.com/en-us/download/details.aspx?id=13523|Microsoft Visual C++ 2010 SP1 Redistributable Package (x64)]].
  - Run Rhino 5 64-bit.


**Need assistance?**

You can save a *.dwi file from Dependency Walker and send it to McNeel Support Team (support@mcneel.com) with a comment "**Error 0xc000007b to Kelvin Cheng**".
{{tag>rhino5 rhino5installationerror_en}}
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<color white> keywords: 64 bit rhino does not start,V5 startup problems </color>