مشکل در نصب "net freamwork

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اقا وقتی میخوام افلان نصی کنم این ارورو میده
The operation is complete but NetFx3 feature was not enabled.
A required parent feature may not be enabled. You can use the /enable-feature /a
ll option to automatically enable each parent feature from the following list. I
f the parent feature(s) are already enabled, refer to the log file for further d
iagnostics.
NetFx3ServerFeatures

The DISM log file can be found at C:\Windows\Logs\DISM\dism.log