If you require Windows 7 Enterprise for a specific legacy app, the safest workflow is to run it in a isolated environment.
: Do not bridge the virtual machine's network adapter to the internet. Keep it offline or locked to an internal-only host network. Download Enterprise SP1 x64 ISO
The broader community-curated Untouched Windows 7 ISO Collection also on Internet Archive. If you require Windows 7 Enterprise for a
What specific are you trying to support with this operating system? Windows 7 Enterprise SP1 x64 MSDN - Internet Archive Download Enterprise SP1 x64 ISO