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Unable to start because of .NET Framework


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  • developer_mh changed the title to Unable to start because of .NET Framework

Hi Josef,

Usually the runtime should install itself during the PV*SOL installation, but sometimes this fails. You can install a newer version of the .NET framework, at least version 4.7.2., by hand. Visit the following link, download the runtime and install it on your machine.


Choose to install the runtime, not the developer pack.

Kind regards,


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Hi Joe,

Windows Vista an Windows 7 are not supported anymore, I am afraid. You should really consider to update to Windows 10, since also Microsoft dropped official support for those operating systems (for Windows Vista in 2017 already, for Windows 7 in January 2020).


Microsoft won't provide updates, security patches and so on. It is really a security risk running those operating systems.

Kind regards,


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