Jobnt we did bring over our MC config file from the old pc. We are not using OneDrive.

This just started a few weeks ago, it had been working fine for well over a year prior to that. We would have four, five, even six instances of MC open at once with no problems. Now we have difficulty opening even one, let alone a second. This particular computer is practically brand new, we've actually replaced this workstation between the start of the problem and now, and the same problem has occurred. I suppose there could be something else internal causing the problem? However I have absolutely no clue what that could be.

We've been consistently running into an issue lately where Mastercam often takes 2-3 tries to actually launch. We'll get false start launches, where the launch window will open, before the loading bar freezes and the whole thing closes. Sometimes the Mastercam window has opened by then. Sometimes, the launch window doesn't even appear. We contacted our vendor, and to be honest they were no help, just as confused by the problem as we are. We have two Mastercam license SIMs, a 2-D and a 3-D, and both seem to work mostly fine in other computers (though at least one has experienced the problem once or twice), but not on this particular one. What might be causing this?