The original OfficeC2Rclient.exe file is not a virus or malware but ... I would suggest you run a malware scan on the system. Press Win+R to open the Run window. Type the command appwiz.cpl ...

Run antivirus scan Run SFC scan Disable cmd.exe from Startup items in Task Manager Delete cmd.exe from Run folder in Registry Editor Let’s take a look at the description of the process involved ...