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Summary

When starting the Performer Suite an error could occur.

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Install the latest .NET Framework.

Download:  https://dotnet.microsoft.com/download or https:/dotnet-framework/

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/docs.microsoft.com/en-us/dotnet/framework/install/

Do you want to know which .NET version you have installed? Please check the link below:
https://docs.microsoft.com/en-us/dotnet/framework/migration-guide/how-to-determine-which-versions-are-installed