Next, modify the metabase:
C:\Windows\system32\inetsrv, in file the
metabase.xml. Open that file with a text editor.
IIsCompressionSchemeelements. There should be two of these: one for the deflate compression algorithm and one for GZIP.
HcFileExtensionsproperty with the extensions you need for static files used in your pages, such as
.js. You will wind up with something like the following:
HcFileExtensions="htm html css ...