sldCheckForUpdates.exe is a legitimate executable file belonging to . As the name implies, its primary function is to manage the update cycle for the SolidWorks software suite. When installed, SolidWorks does not simply exist as a static block of code on your hard drive. It requires periodic updates to fix bugs, patch security vulnerabilities, and introduce new features.

The string "CheckForUpdates sldCheckForUpdates.exe.185" appears to reference a process or file related to (the sld prefix is standard for SOLIDWORKS executables).