What is rundll32.exe?

rundll32.exe is part of Microsoft(R) Windows (R) 2000 Operating System and developed by Microsoft Corporation according to the rundll32.exe version information.

rundll32.exe's description is "Run a DLL as an App"

rundll32.exe is usually located in the 'C:\WINNT\system32\' folder.

If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.

Vendor and version information [?]

The following is the available information on rundll32.exe:

PropertyValue
Product nameMicrosoft(R) Windows (R) 2000 Operating System
Company nameMicrosoft Corporation
File descriptionRun a DLL as an App
Internal namerundll
Original filenameRUNDLL.EXE
Legal copyrightCopyright (C) Microsoft Corp. 1981-1999
Product version5.00.2134.1
File version5.00.2134.1

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameMicrosoft(R) Windows (R) 2000 Operat..
Company nameMicrosoft Corporation
File descriptionRun a DLL as an App
Internal namerundll
Original filenameRUNDLL.EXE
Legal copyrightCopyright (C) Microsoft Corp. 1981-1..
Product version5.00.2134.1
File version5.00.2134.1

Filename variants

rundll32.exe may also use other filenames. The most common variants are listed below:

Folder name variants

rundll32.exe may also be located in other folders than C:\WINNT\system32\. The most common variants are listed below:

Other files also named rundll32.exe

rundll32.exe (203 votes)

Hashes [?]

PropertyValue
MD51ed5274825cd1eebbe102b9ff7c9ec31
SHA256889ca2e8dad02f0a80557b760ba1d3ba03147d73df3e5b8beaf8037698541fb2

Error Messages

These are some of the error messages that can appear related to rundll32.exe:

rundll32.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

rundll32.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.

Run a DLL as an App has stopped working.

End Program - rundll32.exe. This program is not responding.

rundll32.exe is not a valid Win32 application.

rundll32.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with rundll32.exe?

To help other users, please let us know what you will do with rundll32.exe:



Malware or legitimate?

If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.

Please select the option that best describe your thoughts on the information provided on this web page


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Comments

Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.

I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.

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