IERTUTIL.DLL was introduced for Internet Explorer 7 and Windows Vista. It has so far existed in two variations considered by Microsoft to have sufficient external impact to deserve at least a difference in the minor version number.

IERTUTIL Version Distribution
Internet Explorer Windows (NT)
7.0 7.0 Windows Vista
Windows Server 2008
8.0 8.0 Windows 7


Though the next table fusses over such details as build numbers and dates, it is certainly not meant as a comprehensive list even of builds that had formal, public releases. For that, consult Microsoft, who manufacture the software and are surely best able of anyone to present a definitive record. Bear in mind, however, that if Microsoft’s published documentation could sensibly be relied on as either comprehensive or accurate, then you could not now be reading these notes.

Builds are arranged in increasing order of the file version as recorded in the executable’s resources. This version number is readily visible using Windows Explorer either in a so-called infotip for the file or by accessing the Version tab in the Properties dialog for the file. Programmers know this version number as coming from the so-called root block of the version-information resource, specifically from the dwFileVersionMS and dwFileVersionLS members of a VS_FIXEDFILEINFO structure.

The date stamp shown for each version is more obscure. File dates are easily modified after the executable is built and are anyway liable to be shown differently when read from different time zones. However, there is in each executable’s header a date stamp which is set when the executable is built and is not commonly changed afterwards. It is readily accessible to anyone with programming knowledge and appropriate tools, e.g., Microsoft’s own DUMPBIN utility.

File Version File Header Date Stamp Size Package
7.0.5730.11 4535359A (18th October 2006) 266,752 Internet Explorer 7
7.0.6000.16386 4549BCFB (2nd November 2006) 266,752 Windows Vista
7.0.6001.18000 4791A6DF (19th January 2008) 270,336 Windows Vista SP1
Windows Server 2008
7.0.6002.18005 49E03758 (11th April 2009) 270,336 Windows Vista SP2
8.0.6001.18702 49B3ACB8 (8th March 2009) 1,985,024 Internet Explorer 8
8.0.7600.16385 4A5BDA0C (14th July 2009) 2,058,240 Windows 7

The executables for Windows Vista SP1 and Windows Server 2008 are identical.