If you're having problems with the error Rundll32.exe then it can indicate a conflict has occured in your machine.

Be aware that you can cause permanent damage to your computer system if the Rundll32.exe error is left unrepaired.

To resolve this issue use the programs listed below to thoroughly scan and repair your system.

Download and install them one at a time, so as not to cause conflicts;

1. Download Driver Software Update - updates the drivers that control your computer.
2. Download Error Rundll32.exe Fix - helps fix Rundll32.exe on your system.
   

Sometimes Rundll32.exe errors can be caused by spyware and viruses, so it's recommended you run a program like the one below to check and remove any infections it finds.

• Download Spyware Scan - scans and removes any spyware, viruses or adware on your PC.

To start the installation immediately, click Open or Run this program from its current location. Or to save the download to your computer for installation at a later time, click Save or Save this program to disk.

Once installed, run each program by pressing its scan/update button. Once the checks are done, you can let the tools fix the problem or use their reports to repair it yourself.

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The error named Rundll32.exe is an executable file error that occurs when the programs that we install are not compatible with Windows files (normally the older versions) that were installed long back. So the incompatibility of certain files associated with windows causes this error. For the different versions of windows that we use, we have to install the necessary service pack to prevent this error from occurring.

Certain applications especially those of the Mail clients for example Outlook Express may ask the program to open the executable file of rundll32. In certain cases, if an application does not run, some people may think that the rundll32 file associated with the application is missing. The fact is that it is not missing. It is just a program associated with Windows for loading device drivers and few other programs during the boot or startup operation of the Operating System. So it is the file associated with program that rundll32 trying to load is missing and not rundll32 itself.

Rundll32.exe is an essential component of windows as it assists in loading of certain programs in startup itself. Thus from the time we switch on the system, rundll32 is important if we want to use the program that it loads. So, the error associated with this executable file is very simple to understand and deal about. If the program cannot be loaded by rundll32, it gives a rundll32.exe error. It will help the user to clearly understand that either the file related to program is missing or it may be broken. Chances are also there that rundll32 may require multiple files to run the program but only a part of that multiple files may be available.

Those files which the programs require may have been deleted when our system is affected by any virus or spy ware. So for certain period of time i.e. when our system was not affected , windows would not have shown any rundll32 error as our system would have contain all the necessary files for loading the program. Going to bogus or unreliable sites or downloading a so-called genuine product may affect the normal functioning of windows. The most common way this happens is when the user allows a third party to scan his computer online.

There is a difference between a rundll file and aundll32 file. While rundll is a spy ware or Trojan, rundll32 is just a system file. Rundll can mainly affect the system trying to fetch information about the system without the knowledge of the user. While a worst scenario if not treated properly can lead to system crash, rundll32 is not that severe. It is one of few minor errors that occur in Microsoft Windows OS. It is a common notion that viruses come with a .exe extension and the files which those extensions should not be opened normally.

It is advisable for windows users to type “msconfig” in run option and look out for the programs that are installed with the help of rundll32.exe file.