The Windows NT Virtual DOS Machine, or ntvdm.exe, is a common source of frustration for Windows users. This program allows Windows to run older 16-bit applications in 32-bit operating systems like Windows XP. You may experience errors when working with 16-bit applications. The application may suddenly lock up, causing your entire system to freeze and require a reboot. Prevent these errors by configuring your computer so that ntvdm.exe does not start automatically every time you boot your machine.
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Hold down the "Ctrl" key and at the same time, press "R." The Windows Run dialogue box opens.
Type "msconfig" in the box next to "Open." Click "OK."
Uncheck the box next to "ntvdm.exe."
Restart your computer for this change to take effect.
If the problem persists, scan your computer with an antivirus program. Viruses often mask themselves as ntvdm.exe because it is a program created by Microsoft and has top security clearance in Windows.
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