Answer:
The technician should use regsrv32
Step-by-step explanation:
regsrv32 is a command line utility created specifically for registering or unregistering OLE controls, like DLL files or ActiveX. which means, that in this case is the tool that the technician need.
While, te other options have other uses, as: gpresult shows Group Policies, msconfig is a system configuration utility, regedit is a registry editing tool and gpupdate updates group directives.