Iecustom.dll is a process of IE Custom Update Library belonging to the Microsoft Windows Operating System program. That often cause iecustom.dll error messages pop up is using or installing certain programs, especially open Internet Explorer. Such errors caused by situations that lead to the removal or corruption of the iecustom DLL file.

There are many browsers, if IE have problem, you can change it to others, such as Google Chrome which let you run application with lightning speed.

Iecustom.dll common error messages:
- "Iecustom.dll Not Found"
- "This application failed to start because iecustom.dll was not found. Re-installing the application may fix this problem."
- "Cannot find [PATH]\iecustom.dll"
- "The file iecustom.dll is missing."
- "Cannot start [APPLICATION]. A required component is missing: iecustom.dll. Please install [APPLICATION] again."

How to install iecustom.dll file?

1. Press Start and select Run
2. Type CMD and press Enter (or if you use Windows ME, type COMMAND)
3. Type regsvr32 iecustom.dll and press Enter
4. In the end, you should receive a message saying that your file was successfully installed or uninstalled.