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STB5.0.2020.13300 & Prepar3D V5


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Impossible to finish the install STB Client 5.0.2020.13300 on my computer (only one) and then the update 30900. Wizard unable to locate Prepar3D V5.exe (both are on the same HDD). So, No possibility  to open STB (as administrator) and I can't compil airports and  use Makerunway.exe

What must I do ?

Thank u for answering me

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Sounds like you may have a problem with your Prepar3D registry keys.

Please see the information here:


And in particular:

Supported Operating Systems

Prepar3D v5 is currently supported on Windows 10.

The default installation directories for Prepar3D and the location of the registry key entries are:

  • Install Location: C:\Program Files\Lockheed Martin\Prepar3D v5\
  • Registry Location: HKEY_LOCAL_MACHINE\SOFTWARE\Lockheed Martin\Prepar3D v5

That's how STB knows where to find your prepar3d.exe.  If the "SetupPath" key in the above location does not match your reality, STB can't work properly.


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