from time to time recently I notice the cmd window opening and then immediately closing. I need to find out what is using it.
windows 7. updated.
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Sign up to join this communitySome program is running in the background. I would start by looking at recently installed programs. If you haven't, then look at your web browser and see if you've might have gotten had an update.
I actually found this odd behavior on my chrome due to to:
infinity tab
Which is a really nice browser extension that got hacked. Once removed, it stopped my issues.
You could also look into:
https://technet.microsoft.com/en-us/sysinternals/
Which has a lot of specialized programs such as process monitor to see you see what is starting a program. Most likely you'll be looking at Process Explorer and Process Monitor.