How to fix Sage Error 5100 “Microsoft .NET installation failure” issue? — The error code 5100 is a generic error from the Microsoft.NET installer. NET installation failure” arises when you try to install sage 50 cloud accounts. Let's look at how to fix Sage Error 5100 Microsoft. On a particular user's 32-bit Windows 7 SP1 machine, the framework installation (via ClickOnce) is failing with an error code 5100.
