How to Fix Rundll32.exe Application Not Found Error

In case you may be wondering what the hell is Rundll32, it actually runs the dll files and pretty much sets their information on your system memory. During Windows system startup or shutdown process, you may receive one of the following rundll32 exe error messages:

Or you will see other similar errors like: Svchost.exe error, Dumprep.exe error, RGSC.exe error.


Error Message: “Windows cannot find C:\Windows\Rundll32.exe make sure you typed the name correctly and try again.”
Error Message: “Application failed to initialize properly or specified module could not be found.”
Error Message: “rundll32.exe has generated errors and will be closed by Windows.”
Error Message: “rundll32.exe failed to initialize.”
Error Message: “rundll32.exe is missing.”
Error Message: “explorer.exe class not registered.”
Error Message: “Windows host process (Rundll32) has stopped working.”



What Exactly is Rundll32.exe?
The rundll32.exe is a system process that is needed for your Windows system to work properly. The rundll32.exe process is responsible for running DLLs and placing its libraries in the memory. The rundll32.exe process is known as a command line utility program, and it performs its embedded functions along with the rundll.exe file. Rundll32.exe works by invoking a function that is exported from a specific 16-bit or 32-bit DLL module. However the only DLLs that you can call with the rundll.exe and rundll32.exe files are the ones that are only specified to be accessed by these processes.

The rundll32.exe file operates by parsing the command line. The specified DLL is then loaded through the function LoadLibrary(). Afterwards, from the function , it gets the addresses through GetProcAddress(). The command line tail is passed when the is called. Next, the DLL is unloaded upon the return of . Finally, the rundll32.exe file exits.



Rundll32.exe Fix Solution
Check if you find a copy of rundll32.exe in the folder C:\windows\system32\dllcache or in C:\windows\ServicePackFiles\i386. If this is the case, go ahead and copy rundll32.exe to the system folder C:\windows\system32

If you could not find a copy on your Windows system, you can try to find the file on your system installation disks. Lastly, you could simply re-install Windows. However, this would be very time-consuming and you might lose all your data. So this would be the last resort.

Another way to fix a rundll32 exe error is to run a virus scan on your computer. Make sure that you're also using a licensed antivirus. If you have other software that filter Trojans, viruses, malware, and other malicious software, it's also best to use these.

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