Problems with installing .NET

Clarity installation requires specific version of Microsoft .NET framework, which may not be installed or enabled on the computer by default. You will be notified by the Clarity installer which version of .NET is missing on your PC.

Some external control modules and its components may also require different version, which is not controlled by Clarity installer.

There are three ways to obtain required versions of .NET framework:

  • Install the version of .NET supplied on the installation media, folder dotNet.
  • Download the version of .NET from the internet, using the links below, and then install it.
  • Turn on windows updates to download latest version.


Requiered versions of .NET Framework

  • Clarity installation requires version of .NET Framework 4.7.2 or higher
  • Installation Qualification for Knauer HPLC requires .NET Framework 3.5 SP1

.NET Framework installation

On Windows 7, download the respective versions using the link below:

Click here to download .NET 3.5 SP1

Click here to download .NET 4.8 (this includes all previous 4.X versions)

On Windows 8.1 and  Windows 10, follow these steps:

  • Press the Windows Start button, search for "Turn Windows features on or off" and run it.
  • In the displayed Windows Features dialog, check the .NET Framework 3.5 (includes .NET 2.0 and 3.0) and .NET Framework 4.X.


  • Click OK and the selected option will be installed and enabled.



Installing .NET framework may require additional windows updates.

Always follow instructions supplied with each version of .NET you are installing. It contains information about additional updates and security fixes.

Installation of .NET 3.5 is not always smooth in Windows 10, consult it with your IT to find the best way to install it.

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Last updated: 2021-04-29 | webmaster