BROWSEUI.DLL has so far existed in four variations considered by Microsoft to have sufficient external impact to deserve at least a difference in the minor version number.

BROWSEUI Version Distribution
Internet Explorer Windows NT
5.0 5.0, 5.01 Windows 98 SE Windows 2000
5.50 5.5 Windows Me  
6.0 6.0, 7.0, 8.0   Windows XP,
Windows Server 2003,
Windows Vista,
Windows Server 2008
6.1     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.

In the days when Microsoft had two operating systems named Windows, most Internet Explorer versions supplied the executable separately for Windows and NT (and in some cases with a further separation for NT 4.0 and Windows 2000). Where two date stamps are presented on the same row for an Internet Explorer release, it means that the Windows and NT executables differ only in the file header’s date stamp and checksum (and that the date stamps are from the same day).

File Version File Header Date Stamp Size Package
5.0.2314.1000 36F1D8DD, 36F1DBAD (19th March 1999) 803,088 Internet Explorer 5.0
5.0.2614.3500 3720A1D7 (24th April 1999) 803,088 Windows 98 SE
5.0.2920.0 3844D03B (1st December 1999) 812,304 Windows 2000
5.0.3103.1000 38E3FD11 (31st March 2000) 792,848 Internet Explorer 5.01 (Windows 2000)
3947EB48 (15th June 2000) 807,696 Windows 2000 SP1
5.0.3105.105 3941292E, 39412A8D (10th June 2000) 810,768 Internet Explorer 5.01 (Windows and NT)
5.0.3502.4373 3D3D0210 (23rd July 2002) 810,256 Windows 2000 SP3
5.0.3700.6661 3EF274DF (20th June 2003) 808,208 Windows 2000 SP4
5.50.4134.100 39403BE7 (9th June 2000) 823,296 Windows Me
5.50.4134.600 393D8775, 393D8BF1 (7th June 2000) 814,864 Internet Explorer 5.5
5.50.4807.2300 3B5CD62A, 3B5CD981 (24th July 2001) 815,376 Internet Explorer 5.5 SP2
6.0.2600.0 3B7DFE17 (18th August 2001) 1,020,416 Windows XP
3B7DFE4B, 3B7DFFE6 (18th August 2001) 1,024,512 Internet Explorer 6.0
6.0.2800.1106 3D6DFA1C (29th August 2002) 1,021,952 Windows XP SP1
3D6E2AA8, 3D6E2BF2 (30th August 2002) 1,026,048 Internet Explorer 6.0 SP1
6.0.2900.2853 43FAD6F3 (21st February 2006) 1,022,976 Windows XP SP2
6.0.2900.2995 4509135D (14th September 2006) 1,022,976 Internet Explorer 7 for Windows XP
Internet Explorer 8 for Windows XP
6.0.2900.5512 4802A0A8 (14th April 2008) 1,025,024 Windows XP SP3
6.0.3790.0 3E8024A1 (25th March 2003) 1,057,280 Windows Server 2003
6.0.3790.2643 43FA896E (21st February 2006) 1,036,800 Windows Server 2003 SP1
6.0.3790.2795 45108CCD (20th September 2006) 1,036,800 Internet Explorer 7 for Windows Server 2003
Internet Explorer 8 for Windows Server 2003
6.0.3790.3959 45D70A19 (17th February 2007) 1,033,216 Windows Server 2003 SP2
6.0.6000.16386 4549BCDE (2nd November 2006) 1,321,472 Windows Vista
6.0.6001.18000 4791A669 (19th January 2008) 1,324,032 Windows Vista SP1
Windows Server 2008
6.0.6002.18005 49E0372C (11th April 2009) 1,324,032 Windows Vista SP2
6.1.7600.16385 4A5BD991 (14th July 2009) 10,240 Windows 7

The Internet Explorer 8 packages for Windows XP and Windows Server 2003 each have the same BROWSEUI as have the corresponding packages for Internet Explorer 7. The Internet Explorer 8 package for Windows Vista has no BROWSEUI.

The BROWSEUI.DLL executables from Windows Vista SP1 and Windows Server 2008 are identical.