How to fix Rundll Error: on startup, Windows 10

As the name suggests, a Rundll error is related to DLL files, which form part of a large record of codes and information used by many programs on your computer. They are all linked to the Windows Registry and help to enhance your computer's speed and memory effectiveness by using an identical code to run various tasks processed by various programs at a time. This article explains why this error occurs and provides some solutions to removing it.

What causes the Rundll Error?

A Rundll error arises when a program is not granted access to this particular code, sometimes caused by a virus or spyware.

How to solve Rundll Error?

Sometimes, simply rebooting your computer can fix the problem. If it doesn't, you can choose from the solutions below.

This problem may also occur due to an incorrect program removal procedure. You can try to fix it by installing the program that has been removed and uninstalling it either with the Uninstall option provided by the program itself or through the Add/Remove feature in the Control Panel menu. Go to the Control Panel > Add/ Remove program to access the latter feature. Locate the program that you want to remove, then click Remove. Delete any remaining shortcuts, empty the Recycle Bin, and reboot your system.

You may also consider locating the error with the System Configuration Utility. Go to Start > Run, then enter msconfig to load the System Configuration Utility. When it shows up, choose the Selective Startup option and enable only one of its options. Apply the changes, and restart the computer.

Finally, you can try using anti-spyware software, like AVG or Spy Emergency, to locate and eliminate the malware causing the error. There are also various online tools, like Regcure and Process Library, that you may find helpful.