Then continue with the steps via CMD or via PowerShell: Using CMD commands: 1. Insert the OS DVD media into CD/DVD reader. 2. Open a CMD windows with Admin privileges, Run the command: dism /online /enable-feature /featurename:NetFX3 /all /Source:d:\sources\sxs /LimitAccess NOTE: Where "d:" is the CD/DVD drive letter.
https://support.hpe.com/hpesc/public/docDisplay?docId=mmr_kc-0106164