Unfortunately, there are a ton of reasons that you might experience rundll32.exe errors and tracking down the exact issue can take some investigation. During Windows system startup or shutdown process, you may receive one of the following rundll32 exe error messages:
Error Message: “Windows cannot find C:WindowsRundll32.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.”
So What Exactly is Rundll32.exe?
In technical terms, rundll32.exe is responsible for calling Windows DLL (or Dynamic Link Library) files and loading them into your PC’s memory. rundll32.exe errors are generated when Windows® is unable to locate the file the utility is trying to run. The process executes from inside the Windows system32 directory which is installed by default in:
rundll32.exe plays an essential part in sustaining your Windows OS stability and the file integrity on your computer and should not be removed.
A rundll32.exe error usually occurs whenever your PC is not responding correctly due to either a corrupted software application (registry entry) or a faulty hardware device. In some cases, users have reported that rundll32.exe has been disguised as a virus. You’ll generally notice this error message during your Windows startup or shutdown cycle.