How to fix Rundll errors

Rundll.exe is a command-line utility embedded in a Windows operating system that is used to run program codes in DLL files.

Each DLL file contains codes that are used by different programs to perform a particular task. The rundll error is generated when a program is unable to access the particular code it requires to complete a specific function.

Cause of the Error

Malware infection is the most common reason behind Rundll errors. Malware programs, such as virus, worms, Trojan, adware, and spyware often modify or delete important DLL files on your system. This causes Rundll errors to appear when programs are unable to access the DLL files infected by malware.

Improper installation or uninstallation of programs or applications may also cause Rundll errors.

How to fix Rundll errors

In case you notice that you are getting Rundll errors after you have uninstalled a particular program, then to correct the issue first reinstall the program and then uninstall it again through the Control Panel/Add or Remove Program utility. During uninstallation, if you are prompted whether or not to retain a particular shared file, choose to keep it on your computer.

Many Rundll errors occur when you start your PC. If this is the case, perform a clean boot to identify and rectify the software program or hardware device that is generating the error. To do this, perform the steps listed below:

Go to the Start menu, click Run, type msconfig and then press Enter to open the System Configuration Utility Dialog box.
On the General tab, in the Startup Selection section, select the Selective Startup checkbox and one of the options listed below it.
Restart your computer.
Continue this until you have zeroed in on the checkbox option causing the Rundll error.
Next, in the System Configuration Utility Dialog box among the tabs listed in top, select the checkbox option that is causing the Rundll error.
Now, clear all but one command under this tab and reboot your system. For instance, if the error appeared when you selected the Load startup items checkbox, open the Startup tab, clear all but one option on this tab and then restart your PC.
Continue the process until you isolate the command generating the Rundll error.
Resolve the issue related to the identified software or hardware that is causing the Rundll error.
If you believe Rundll errors are appearing on your PC due to malware infection, then install a reliable antivirus suite and perform a full system scan to detect and remove viruses. Also, keep your antivirus suite updated with the latest virus definitions and security updates.

Rundll errors may also occur if the entries related to DLL files in the registry are invalid, corrupt or deleted. Perform regular registry scans, using an efficient registry cleaning tool, such as PCHealthBoost to ensure your system registry remains free from unwanted, obsolete and invalid entries.

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What Is System32.Dll?

What Is System32.Dll?

System32.dll is not a Windows system file, and may pose a security risk as high as 32%. In addition, it is located in an unidentifiable folder and only proof of its existence is the registry entry -HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Current Version\ShellServiceObjectDelayLoad.

The file is loaded during the boot process of Windows XP. The size of this file is 0 bytes on Windows XP.

Is System32.dll a Virus?

System32.dll may be a virus. Many security websites list sysem32.dll as a harnig trojan. Once this trojan installs itself on your computer, it tries to download more malicious programs to the system. It also attempts to disable the installed security programs.

To deal with the trojan, you can do the following;

Disconnect your computer from the Internet and any other network it may be connected to.
If your security tool allows DOS-based or Safe mode scanning, restart your system in Command Prompt mode or Safe mode and then run a full system scan.
If any infection is detected, remove it to get rid of the trojan, and any other malicious software that it may have installed on your computer.
If the trojan still stays, download the harnig removal tool from and run it to get rid of the malware.
System32.dll Problem During System Recovery

System32.dll error may also occur when you are trying to perform system recovery. When the error occurs, your system may freeze up and display a blue screen error related to system32.dll.

The error is frustrating because it fails the system recovery process and user is left wondering about the cause of system failure.

This error mainly occurs when system32.dll is corrupted, missing or is moved to a different folder and Windows is unable to detect the file. Now as a DLL file is shared among many different applications, any of them trying to access the DLL may generate the system32.dll error.

There can be many causes of a missing dll file:

The file is accidently deleted from the system.
The file is corrupted.
The file was deleted when you uninstalled an application or when files of an application files are corrupt.
System registry is corrupt.
You can perform the following tasks, to deal with system32.dll and other DLL errors:

Check the Recycle Bin: If the DLL file is deleted by user error, it is quite likely in the Recycle Bin. So check it there and if you find it, restore it to its usual location to resolve the issue. If you have already emptied your Recycle Bin, you can use a File Recovery software to recover the deleted file.
Reinstall the corrupt application that is generating the error: if the error is generated by a specific application, it is quite likely that the files of this application are corrupt. In this case, uninstall the application, restart your computer and then reinstall the application again to resolve the error. To make sure that this process is effective, it is advised that you use a reliable program uninstaller tool to remove the corrupt application. The program uninstaller tool will ensure complete removal of all application files and registry entries.
Detect and Fix DLL entries in the registry: When a DLL file is registered, it makes an entry in the Windows registry. If the registry is corrupt, it may generate DLL errors. To deal with this issue, you need to detect corrupt DLL entries in the registry and fix them. The best way to perform this task is by using a reliable registry fixer tool. All good registry tools have an option that enables run check on DLL registry entries, identify incorrect entries and then fix them. So, use this feature to resolve corrupt DLL entries.
Perform System Restore: If the above methods fail to resolve the system32.dll error, it is best to use the System Restore tool in Windows to revert your computer settings to a time when it was free of errors. System Restore only roll backs the system’s configuration and registry to a prior state. It does not affect your data, such as Word documents, emails and favorites.
Reinstall your system: Â If all of the above fail, use this option as a last resort. Back up all your personal user data, such as your personal files, emails, favorites, address book, presentation, worksheets, and databases. Then perform a clean install of Windows on your computer. Making a backup of your data is important because when you clean install your system, you have to format your hard disk and all data stored on it is lost.
As you have seen in this article, there can be many causes of DLL errors, such as the system32.dll error. There are certain tasks that you can perform to prevent these errors. For example, you should be selective about what you download and install to your computer. Remember that pirated and illegal software may be loaded with malware and can adversely affect your computer. Also, you must run regular malware scans to make sure your PC is free from malware.