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Norton Cleanup Task
I was wondering if anyone else has had this peculiar issue where they get a command prompt window flash onscreen every 20 minutes or so. Well it turns out that I had a task called NortonCleanupTask in the root of the Task Scheduler on Windows 10 that was trying to execute a batch file called NortonCleanup.bat that was supposedly on my desktop.
I have removed the task and it seems to have solved the issue, just thought I would share this information in case anyone else has this issue.