The ghost is back in the machine

[martyscncgarage]

I have never disabled Defender via the registry

[tuffduck]

The only things on the computer is windows and cnc12

[martyscncgarage]

The only things on the computer is windows and cnc12

I can't test your situation as I don't have that particular PC.
Do you have ANY other Windows 10 PC you can test with? (Even if it doesn't quite meet the performance requirements, just to test with)

Marty

[Caleb]

I am running Windows 10 Version 21H1 build 19043.1110.
The computer is a Lenovo Thinkcentre AIO M90Z

I gave up with my M90Z thinkcenter because it is the only PC of 3 running acorn that would give send resend errors. I could change it to a different machine, the errors would follow the pc, even with a fresh clean install of windows. Its not worth persisting with because it will always give you headaches. Change the PC and be happy.

[martyscncgarage]

I am running Windows 10 Version 21H1 build 19043.1110.
The computer is a Lenovo Thinkcentre AIO M90Z

I gave up with my M90Z thinkcenter because it is the only PC of 3 running acorn that would give send resend errors. I could change it to a different machine, the errors would follow the pc, even with a fresh clean install of windows. Its not worth persisting with because it will always give you headaches. Change the PC and be happy.

I had a hunch this was a possibility.
Thanks Caleb, for letting us know you had a similar situation with this model PC. (I'm not a fan of all in one PC's myself, all your eggs in one basket sort of thing)
Did you happen to use the Lenovo Update utility to make sure the drivers (Ethernet specifically) were up to date?

[Caleb]

Tried Lenovo update utility drivers, direct download and install and windows update driver versions. I did 4 different full reinstalls of windows 10 using various levels of not allowing windows to connect to the internet/log ins. Tried with windows defender turned off in the registry. Even tried changing the timing perimeters for the ethernet card.
The problem most of the time wasn't bad enough to cause problems without looking at the error log. Sometimes it would be every other 5 minute job, sometimes I could run for hours with no bother.
Every time I thought I had found a working solution the fault the problem would come back shortly after even with out changes. Same acorn/CNC and ethernet cable, power lead etc, with a different PC using the same report setup of Centroid CNC and files would work fine with no errors at all.

The PC just could not be trusted to be stable to do anything that was of any value, this thread has reminded me to dig it out clean it up and get rid.

[tuffduck]

Thanks Caleb, I will be on the hunt for another computer.