Installation failed on Microsoft .NET Framework

If you receive the following error message, you may need to reinstall your .NET Framework.

Installation failed on Microsoft .NET Framework 

The .NET Framework 3.5 sp1 is a prerequisite to run the Rose Online Patch Launcher. This message is a generic error message displayed when the .NET Framework installation fails. Please try uninstalling the currently installed .NET Framework versions (this can include 1.1, 2.0, 3.0 and 3.5) then download the .net framework 3.5 sp1 installer here.

  
Once installed, please try running ROSE Online again. The installation of the new patch launcher will continue normally. If you have further problems with installing the .NET Framework, please contact our support team for further assistance.

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