We had a case where MAS 90 would not install on a Windows 10 machine. This information was found and I wanted to share with the group in case it was not know by all. If I am the last one to know, please keep the jokes to a minimum....
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Just wanted you to know that after a little looking I found that Win 10 has its own version of .NET 3.5 framework.
After installing I was able to install and run Sage 100 with no issues. Including the C++ 2005 runtimes from the sage installer.
To install 3.5 offline, without having to download it from Microsoft, you can use to windows 10 ISO.
Instructions can be found here. http://winaero.com/blog/offline-install-of-net-framework-3-5-in-windows-10-using-dism/