Rundll32.exe is missing Error Treatment

Rundll32.exe (Microsoft Rundll32) is a Command Prompt utility that helps to run some command- functions in Dll-files. This utility was created by Microsoft programmers for internal application. But sometimes due to some unpleasant conditions you may receive one of the Rundll32.exe is missing errors:

“C:\Windows\System32\rundll32.exe
Application not found.”;

rundll application not found error message

“The instruction at “0x008d12e0 referenced memory at “0x00000000”. The memory couldn’t be “read”.
Click on OK to terminate the program.”;

rundll application error message

“Windows cannot find C:\Windows\System32\rundll32.exe. Make sure you type the name correctly, and then try again.”

windows cannot find rundll32.exe error

“Windows cannot access the specified device, path or file. You may not have the appropriate permission to access the item.”

windows cannot access rundll32.exe error message

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This Rundll32.exe is missing error can go along with the freezing of the computer or just slowdown of its operability.

Malware issue?

What does it mean: “Rundll32.exe is missing”? And where it should be usually? Rundll32.exe is always disposed in C:\Windows\System32. In the case of detection of this file in some other directory it should be deleted immediately. Some worms (for example W32/Lovgate-AB, W32/Deloder-A), Trojans (such as Troj/Lineage-AR, Troj/LegMir-AS and Troj/Delf-AC) and many other malicious programs use the name “rundll32” for the suppression of their presence in the system.

Some other harmful programs use rundll32 application for opening of pop-ups, running of keyloggers etc., but this process is significant one for other legitimate processes. Don’t delete it; just try to find the process that is loading with its help, and this very process should be stopped. Occasionally Rundll32.exe is missing because of some viruses or other malware that can substitute it.

This error usually can be associated with initialization of the library, or rather with the inspection of checksum that can be provoked by its damage on system failure or virus infection.

Fixing process

Scan your computer for viruses and restore the system or run the checkup of system files:

  • 1. Press Windows + R buttons.
  • 2. Type sfc /scannow and click OK. (Sometimes you will need Microsoft Windows setup disk.)

If Rundll32.exe is missing error appears on windows startup only, then you should delete rundll32.exe from autorun entries:

  • 1. Press Windows + R buttons.
  • 2. Type “msconfig” and press enter.
  • 3. Find Startup tab.
  • 4. Find there rundll32.exe and remove the tick from the check box.
  • 5. Reboot your computer.

There is another way to act if Rundll32.exe is missing. Just put it to its place:

  • 1. Insert Windows setup disk.
  • 2. Press Windows and R buttons all together.
  • 3. Type this command in the command line:
  • expand X:\i386\rundll32.ex_ c:\windows\system32\rundll32.exe

  • 4. Hit Enter on your keyboard.
  • 5. Reboot your computer.

DownloadDownload Fix Wizard

If nothing helps, then the following method is for you:

  • 1. Download the software for fixing registry (Registry Cleaner) and install it.
  • 2. Run the software. Click Registry and then Scan for Issues.
  • 3. After the scanning, choose Fix selected issues and fix all the issues.
  • 4. Reboot your computer.
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