What is Windows System32IIs.dll?

DLL stands for "Dynamic Link Library"; this type of file stores code for use by one or
 Windows operating systemmore programs.
The "ils.dll" file located in the "WINDOWS/System 32" folder is a standard
 component of the Windows operating system.

Function

1. The Windows NetMeeting component of Windows XP uses the code contained in the ils.dll file. Removing or modifying the ils.dll file may cause NetMeeting to stop functioning properly.
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Appearance

3. The file only appears in versions of Windows XP that have NetMeeting installed. Windows Meeting Space replaced this component in Windows Vista and later versions.
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False Positive

5. Older versions of the Avast! Antivirus program may report the ils.dll file as a rootkit infection. This is a false positive; you do not need to quarantine or remove this file to keep your system secure. If you're unsure about the security of the file, run another malicious software scanning program to confirm any infection.