How to Fix Missing Iertutil.dll Errors in Windows

Some of the programs stop to work when an important file goes missing on your system. One of such errors show up when iertutil.dll goes missing in Windows. This file is linked to the Microsoft Internet Explorer web browser which is tightly integrated with the operating system. Here is some examples of the errors involving a missing iertutil.dll file.

  • This application failed to start because iertutil.dll was not found. Re-installing the application may fix this problem.
  • Cannot start PCTV. A required component is missing: iertutil.dll. Please install PCTV again.
  • iertutil.dll not found.

Fix Missing Iertutil.dll Errors

The easiest way to fix this error is by re-installing the latest version of Internet Explorer on your system. The file iertutil.dll is updated during the Internet Explorer setup. If you are using Windows XP then the latest supported version of Internet Explorer is version 8 which you can download from here. If you are Windows Vista or Windows 7 user, you can download Internet Explorer 9.

If you have already installed the latest version of Internet Explorer, then you can extract the iertutil.dll from the Internet Explorer setup and copy it to your System32 folder. Here is how:

  1. Download appropriate version of Internet Explorer setup for your Windows from the links above. I downloaded the IE9-Windows7-x86-enu.exe setup file for Internet Explorer 9 and put it in the D: folder.
  2. Download the 7-Zip Archiver command line version and extract the 7za.exe in the same folder as the Internet Explorer setup file.
  3. Open an elevated command prompt as explained in this article.
  4. In the command prompt, type the following commands one after another, press Enter after each command line. Your folder path and filenames might be a little different so you can change them accordingly.
    IE9-Windows7-x86-enu.exe -x:d:ie9
    7za.exe e d:ie9*.cab -od:ie9 iertutil.dll -r
    copy d:ie9iertutil.dll %windir%system32

  5. If everything goes okay, then the iertutil.dll errors, that you have been facing, would disappear from your system.

Even when the iertutil.dll missing errors are gone, you should run a full anti-virus scan and check your system for corrupt files. This would make sure that you do not have any other files missing or infected by a malware.