This param in web.xml solves my problem.
<context-param>
<param-name>org.apache.myfaces.ADD_RESOURCE_CLASS</param-name>
<param-value>org.apache.myfaces.component.html.util.StreamingAddResource</param-value>
</context-param>-- View this message in context: http://myfaces.10567.n7.nabble.com/ExtensionsFilter-corrupt-xlsx-during-download-tp117674p117727.html Sent from the My Faces - Dev mailing list archive at Nabble.com.
