Rhino does not run due to .NET 4 Error

After installing the .NET Framework 4, programs, like Rhino that require it, still do not believe it is installed and refuse to run.

This happens after installing:

Microsoft .NET Framework 4 (Full)
Microsoft .NET Framework 4 Client Profile

Both report the .NET Framework 4 installation was successful and it appears in the list of installed programs in Control Panel.

You may have tried:

Rebooted and Reinstalled but nothing has worked.

Solution

Log in as the Administrator on the computer with FULL ADMINISTRATOR RIGHTS. Individuals may have some administrator rights. However, it is not the same.
Use the clean-up procedure detailed in the .NET Framework Cleanup Tool User's Guide.
After clean-up, install the Microsoft .NET Framework 4 and .NET Framework 4.5 for Zoo 6.

The Microsoft .NET Framework 4/4.5 web installer package downloads and installs the .NET Framework components required to run on the target machine architecture and OS.

An Internet connection is required during the installation. .NET Framework 4 is required to run and develop applications to target the .NET Framework 4 for Zoo 5 and .NET Framework 4.5 for Zoo 6.

This version of the .NET Framework runs side-by-side with the .NET Framework 3.5 and earlier versions, but performs an in-place update for the .NET Framework 4.

Test

Copy this into Internet Explorer and it will report back the version of .NET.

<html>
<body>
<button onclick="alert(navigator.userAgent);">User Agent</button>
</body>
</html>

Or see:

How to determine which versions and service pack levels of the Microsoft .NET Framework are installed.

McNeel Wiki

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Rhino does not run due to .NET 4 Error

This happens after installing:

You may have tried:

Solution

Test

McNeel Wiki

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Rhino does not run due to .NET 4 Error

This happens after installing:

You may have tried:

Solution

Test

Page Tools