Issues accessing JNLP application in Internet Explorer due to missing mime-type. -------------------------------------------------------------------------------- Key: WFCORE-4043 URL: https://issues.jboss.org/browse/WFCORE-4043 Project: WildFly Core Issue Type: Bug Reporter: Saisha Naik Priority: Minor Attachments: TestJnlp.jar Issues accessing a JNLP application in Internet Explorer due to missing JNLP extension in undertow. The JNLP application is rendered as an XML file due to incorrect mime-type. The JNLP mapping does not exist in [Mimemappings.java|https://github.com/undertow-io/undertow/blob/master/cor...]. The work around is to add the mime-type to the servlet container[2] : {code} /subsystem=undertow/servlet-container=default/mime-mapping=json:add(value="application/json") {code}