[FAQ]'Failed to get path of 64..  
[FAQ]'Failed to get path of 64-bit Common Files directory' Error when installing oCam

Press the Windows Key + R shortcut on your keyboard to bring up the Run window, and type regedit.

And follow the video below.

https://youtu.be/6GyJV5SgZsY

The following registry key values should be added.

CommonFilesDir = C: \ Program Files \ Common Files
ProgramFilesDir = C: \ Program Files