Originally posted by chriscsanyi
View Post
It is certainly possible to configure your IIS server to return a last-modified header for .HTM pages, just as it does for .HTML pages. We have seen many default IIS servers that do this (including our own test IIS servers installed with default configuration).
But this is an IIS configuration issue and we do not have enough information (nor are we the right people) to solve this issue. Perhaps you have .HTM setup to be handled differently from your .HTML files? I would recommend referring to IIS documentation for more information.
Leave a comment: