UCCNC shuts down unexpectedly

[A_Camera]

I still think it's a Windows installation problem. It's a good idea to start with the windows repair tool, but beware ONLY use repair tools which are issued by Microsoft. DON`T go for any other versions. Next step, if the Microsoft tool doesn't find any errors is to reinstall Windows.

Actually, if you have a known date before the problem then you could go back to that date (minus a few days) and try a Windows recovery from there. Windows will uninstall everything installed after that date. Note that only drivers and updates of Windows will be uninstalled. Software you have installed after that date will still be there, but if it needs any interaction with Windows it may no work and must also be reinstalled / repaired.

BTW, during all the years with W10 I have never ever had an ntdll.dll error. I don't understand why you say it's a known case. It can however be the result of unintentionally having removed something which is necessary for windows. Admittedly, I am not using any other UCCNC plugin than the Modbus master, but I think that the X-Box pendant is so popular and widely used, so it should have been quite intensely tested. Also, that plugin is very old, it is still the same version as from the start. This can of course be a problem in some cases, if Windows or UCCNC requires that, but it should be known in that case. Have you checked on CNC Drive forum?