Today one of my colleague came across a WebDAV issue where a customer was getting the error “Error: Cannot add duplicate collection entry of type 'add' with combined key attributes 'users, roles, path' respectively set to '*, , *'” when he would try to open WebDAV Authoring Rules feature in IIS 7. The error message clearly states that we have duplicate entry in the applicationHost.config file. <webdav> <authoringRules> <add users="*" path="*&quo... [More]