Microsoft Application Compatibility Toolkit 5.6 Download ((new)) -

The short answer:

First released alongside Windows 7 and Windows Server 2008 R2, ACT 5.6 is a lifecycle management tool designed to help organizations inventory, analyze, and mitigate application compatibility issues before a large-scale Windows deployment. microsoft application compatibility toolkit 5.6 download

Only for isolated, legacy lab environments disconnected from the internet. The short answer: First released alongside Windows 7

The toolkit is not a single app but a suite of utilities designed to identify and fix roadblocks. microsoft application compatibility toolkit 5.6 download

Consider pairing it with a Windows 7 virtual machine under Hyper-V for ultimate compatibility.