Ntvdm.exe is a legitimate system process, which belongs for Microsoft Windows Operating System. This process can also be called as Windows NT DOS Virtual Machine because it's used to handle a single DOS environment. Typically, it starts when you start a 16-bit program on your computer and remains in its memory after you quit this program in case you start another 16-bit program in the future. Just like many other legitimate processes, ntvdm.exe is located in the folder C:\Windows\System32. According to experts, it is a core system file, which takes about 73,216 bytes of computer's memory. We do not recommend terminating this process because ntvdm.exe is important for normal PC's functionality.
Some viruses use randomly named processes in their activity. Pay attention to ntvdm.exe file's location and check your computer with reputable anti-spyware if you think this process could be related to malware or other cyber threats.
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