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A good place to look is the Task Scheduler. If the cause of the window is a system process. We can’t tell you what to do because it really depends on the app. It’s up to you to decide what you do with the app. This will identify which app or process is the problem. It will tell you which app opened the window. Check out the event(s) that coincide with the date and time of the window appearing. Expand the Windows Log and go through the logs in Application, Security, Service, System, and Forwarded Events. Everything that happens on your system is logged here. Open the Events Viewer when the window appears. This doesn’t necessarily mean the app is malicious. If you did install a new app, it might be the cause. You have to rely on your own memory here though. If you haven’t recently updated an app, or installed a new one, you can rule this possibility out. It’s also possible that a new version of the app is trying to run a process. If you recently updated an app, it’s possible that it didn’t install properly. If it matches the resized app window, you’ve found your problem.
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When an app window appears and disappears on your screen the next time, you will at the very least see what size the window was. Make it smaller or just narrower than it normally would be. Resize the app window you think might be the culprit. In our experience, this happens most with apps that send frequent notifications e.g., messaging apps. In order to rule it out, check which apps you have running when this happens. This is a false positive though so we need to rule it out. If this is what is happening, it’s going to be too quick for you to see what window it is. You might be working in your browser when an app window in the background suddenly comes into focus and then quickly disappears. Sometimes, when you have multiple apps open, one on top of the other, they ‘flicker’ in and out of focus. We assume it’s a command prompt window that’s opening and closing. This will take a little time to figure out but time is really the only complicated bit. To be sure, you need to figure out why there’s a command prompt window opens repeatedly in the first place. Chances are, if you haven’t visited any exceptionally shady websites in the past, it’s nothing.
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Maybe someone is accessing your webcam and regularly taking photos of you. Perhaps you installed an app that came with spyware. The problem is, given how common security breaches and scams are getting this is enough to scare the average person. The command prompt window opens and closes so quickly, it will likely take you several days to figure out is the Command Prompt. Does a command prompt window open on your PC for a split second and then automatically close? You’re not alone.
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