acsvc.exe is the Access Connections Main Service and is part of ThinkPad Access Connections suite. It is installed on Lenovo Thinkpad laptops.
This program is a non-essential process, but should not be terminated unless suspected to be causing problems.
Non-system processes like acsvc.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you
check your registry to identify slowdown issues.