Windows 10 and .NET 3.5

Call this group policy fail #436.

I have Windows 10 Enterprise.  I need to install a vSphere client that requires .NET 3.5, which is a 'feature' in Win10 instead of an installable item. Trying to add the feature I get hit with an error that Windows Update failed to download the update I need to enable .NET 3.5.

ISO to the rescue.  Mount the ISO, then dism the sucker:

dism /online /enable-feature /featurename:NetFX3 /all /source:d:\sources\sxs /limitaccess

Now back to getting actual work accomplished...