Flexrelease_x64.dll

In corporate environments, companies buy a limited number of software licenses (e.g., 50 seats of AutoCAD). They install a on a central machine. When an employee opens AutoCAD, the software checks out a license via the network.

Is it a virus? Is it a critical Windows component? Or is it just some forgotten piece of software from a decade ago? flexrelease_x64.dll

Leave it alone. It is helping your IT department manage costs. If you are a home user who removed those programs years ago: Use a tool like Autoruns or CCleaner to remove the leftover FlexNet Licensing Service from startup. In corporate environments, companies buy a limited number