What does it mean if several instances of cmd.exe are open on your Windows computer without you opening them? - Quora

Answer (1 of 2): If several instances of the Command Prompt (cmd.exe) are open on your Windows computer without you opening them, it could be a sign of malware or a virus. Some malware and viruses can open multiple instances of cmd.exe in order to perform actions on your computer without your kno

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