Issue

When trying to install SMTP service on windows 2003 server I was asked for adsiisex.dll during the install, I pointed the installer at the i386 directory and it still could not find adsiisex.dll

adsiisex.dll (ADSI Extension) is a component from the software Internet Information Services version 6.0.1830 by Microsoft Corporation.

Solution

Once you start the install process, it will prompt you for files within the i386 directory. part way through it will then advise you that it is unable to find adsiisex.dll

It turns out that this DLL is in the MS.cab file in the i386 directory. There is no easy way to get the browse dialog to find the dll inside of the cab file. So, you need to manually extract all of the files from IMS.cab to a folder on your hard drive. You then point the browse dialog to that folder, and the install will complete successfully.

This applies to both Windows Server 2003 and Windows Server 2003 R2.

From past experiece the best way to extract the .cab file is with something like winrar

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