Hi @Open__ ,
The .NET Framework 4.8 was introduced starting with Windows 10 version 1809 (i.e. Windows 10 October 2018 Update), so the Windows 10 Enterprise 2015 LTSB (Long-Term Servicing Branch) edition is not supported.
It doesn't even support .NET Framework 4.7. Windows 10 Enterprise 2015 LTSB only supports older versions of the .NET Framework such as the .NET Framework 4.5.2 and . NET Framework 3.5.
Best Regards.
Jiachen Li
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