What is "...\Microsoft Shared\Web Folders\1033\NSEXTINT.DLL"

[Harvey]

What is "...\Microsoft Shared\Web Folders\1033\NSEXTINT.DLL" ?
And "...\Microsoft Shared\Web Folders" for that matter?
TIA
Harvey

 

[JoAnn Paules]

http://www.bleepingcomputer.com/filedb/nsextint.dll-14334.html