Ultimately, while the quest to run "Wilcom Es V9 on Windows 7-8-10" is understandable, the most reliable path forward for professional use is to migrate to a modern, supported version of Wilcom EmbroideryStudio. For legacy users, the old adage applies: if it works, don't fix it, but always have a migration plan for when it inevitably stops.
Compared to modern versions like e4.5, V9 runs exceptionally fast on older hardware. Wilcom Es V9 Windows 7-8-10