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-rw-r--r--user_guide_src/source/helpers/url_helper.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/user_guide_src/source/helpers/url_helper.rst b/user_guide_src/source/helpers/url_helper.rst
index 8de7817e4..1987dfb72 100644
--- a/user_guide_src/source/helpers/url_helper.rst
+++ b/user_guide_src/source/helpers/url_helper.rst
@@ -325,3 +325,7 @@ engine purposes. The default Response Code is 302. The third parameter is
.. note:: For very fine grained control over headers, you should use the
`Output Library </libraries/output>` set_header() function.
+
+.. note:: To IIS users: if you hide the `Server` HTTP header, the "auto"
+ method won't detect IIS, in that case it is advised you explicitly
+ use the "refresh" method.