Welcome to the PC Pitstop Process Library. We have an extensive list of the most common processes currently running on PCs. Use this library to inspect the safety of your running processes on a regular basis.

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Process Name

  

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User Optional User Optional
Unwanted Unwanted
Spyware / Adware Spyware / Adware
Virus Virus


ntvdm.exe (16-bit app)

Percentage of recently scanned PC's with this process running: 0.21%
Average CPU use for this program: 0%
Average RAM for this program: 2 MB


In addition to the file name, ntvdm.exe, the following version information is used to identify the file. If the file does not match this information, it may be a different file. To ensure the file is absolutely correct, run a free and comprehensive scan.

Vendor contains:Microsoft
Product contains:Windows

To view version information with Windows Explorer, right-click the file and click Properties, Version.




Win Patrol

ntvdm.exe provides support for 16-bit Windows applications. This would usually indicate that you have an older 16-bit application running while PC Pitstop's tests were running.

ntvdm.exe  is required by third-party software or hardware and should not disabled.

PC Pitstop recommends WinPatrol Plus for monitoring all of the background activity on your PC. WinPatrol Plus provides an easy to understand descriptions of over 15,000 processes and programs.


MD5 hashes is the way that computers can define the uniqueness of a file. Anti malware vendors frequently use this technique to detect and clean malware. It is common for a program to have multiple MD5 hashes as the developers create newer versions of the program. For the program called ntvdm.exe, we have detected more than 10 different MD5 hashes. Click on a hash to research the hash in Google.

Program Name MD5 Count
ntvdm.exe> 10
MD5 Hashes
# MD5 Size
1 0xa7fc61bf2d01d00ab9e4e80605bdb2a9 395024 bytes
2 0x5827b14b4e84da4144d8215883e05177 420864 bytes
3 0x4885e351b98f4edc0c44d2946d1e8765 68695 bytes
4 0xf9ed69b23ab783c515a6ae21f06999b8 420352 bytes
5 0x032817e83e69f75e43445f9acfded746 419840 bytes
MD5 Hashes
# MD5 Size
6 0xf7ea3ddbb1356ecbd5d48b476f054fef 401408 bytes
7 0x58cc483a2ef3ef09facc7db009b2d348 398096 bytes
8 0x671b467b990572badf59854438a73b5d 420864 bytes
9 0x76abcd32d76549b6e33b9f6c79d89c00 70144 bytes
10 0x3872b4045703ca511235d325f336de8a 521216 bytes


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PC Pitstop is the undisputed leader in PC diagnostics. Our running process library is culled from our database of over 100 million PC diagnostics and scans.

To find the latest driver for your computer we recommend running our Free Driver Scan.

Find out how to make your computer faster by running our Free Performance Scan.

Tips from the PitCrew

Tips from the Pit Crew

Every process running on your computer takes up CPU cycles and valuable memory. For optimal PC performance and resource utilization, you should be aware of every process on your computer. PC Pitstop designed this process library to help you know which processes are worthwhile and others that slow system performance.

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Important Note

A file name alone may not be enough for positive identification. PC Pitstop's Overdrive tests and spyware scan use information such as the company name, product name, or install directory.

If you are unable to identify a file, ask about it in our forums after running our full tests.