Several questions. I suppose I am lucky given I am on 9.2 and Win7. My hats go off to those on Windows 10. I can barely use it, although I imagine if I just made the switch, I would do better.

1. Are you using the main computer for production or just as a "server?" If you are using it, how much RAM is on it? I would suggest trying not to use it as this would likely add to the chance of the crashing. Obviously, the main computer would be the only one with SQL. You really don't even need AC on it as long as SQL is installed. Although, if you are not using it, it shouldn't matter.
2. Have you tried making a different computer the main computer? You could try using it, but again, the main computer really shouldn't be used for accessing AC or doing any other work on it. I would think 4GB of RAM would be enough, but 8 would be better especially if it is in use.
3. On an actual server, it would be set to Background services. Most clients by default are set to run for programs. You can try changing it through Computer -> System Properties -> Advanced System Settings -> Advanced tab -> Performance Settings -> Adjust for best performance -> Advanced -> Adjust for best performance of: change to Background services. You would not want to use the computer in that mode.
4. AC support said it was not AC but Windows. Likely answer. Does it say in AC that it is compatible? If so, then they can't really say that.
5. Is there a way to go back to Win7 at least on the main computer?
6. Is your paging file size 1.5 times as large as your actual RAM?

OK, here is where everybody hates me, but these situations really deserve asking. It also depends on how quickly it started happening after moving to 9.3 or 9.4 or 9.4.2 or combining those with Win10. 9.4.2 is practically a beta. I rarely go to those versions until after reading these. A lot of beta testing is done right here on the user board. Generally, anytime I upgrade, I install it in a VM (something more difficult now that AC has to install it). Of course, once the computer is credentialed, you should be set. Or you can run it on a sandbox computer. I generally play with it for at least a week to check out the features, see if it has bugs which are showstoppers and check the overall speed. Plus, do the features make a big difference. I hate to say this, but like all companies and new updates, the chances for bugs is greater than an earlier stable version.

Originally Posted by .
Rather exclusive to Main Computer
Again, are you using this computer? Or is it just crashing because it has the database?

Originally Posted by .
Only AC crashes, all other software hums along unaffected as does the OS
I wouldn't expect the native Windows programs to crash. These are specifically designed to work with Win10.

Originally Posted by .
I have a pending tech service appt in a few weeks to have them investigate.
Is this with AC or an outside tech company? Either way a few weeks is a few weeks too long. You need tech support like tomorrow.

Is there anyway to change the main computer back to Win7. Reformat to Win7 Pro, don't install anything on it except AC with SQL. Of course, run the updates. Then, put it in a corner and never use it. If the crashing is gone, then buy another computer to use as a client.

It seems like Win10 in the common denominator. If it is only the main computer, you could try installing VMWare and installing Win7 and running SQL there.

Anyway, lots to try. I would say changing the performance settings, adding RAM if 4 or less and not using the main computer would be the first things to try.


Bert
Pediatrics
Brewer, Maine