Question : .net framework 3.5 install hangs

i have tried multiple times to install .net 3.5 on multiple different computers, and it always seems to hang at about 85% i have even let it go over night, still no luck. any ideas what i am doing wrong here? i have heard that it might be trying to connect to the internet to find updates or source files. if that's the case how do i keep that from happening?

Answer : .net framework 3.5 install hangs

Microsoft initially just provides a minimal size dotnetfx35setup.exe download which is a bootstrapper that will still need to download more files via Internet. For users who prefer to perform offline installation or install .NET Framework 3.5 SP1 without waiting for download to complete will have to download and save a copy of full complete standalone or redistributable Microsoft .NET Framework 3.5 SP1 setup installer, which is finally published by Microsoft.