In Visual Studio 2008, I periodically see the error in the status bar: ”Error updating JScript Intellisense, see Error list” HOWEVER, there are no errors about this in the Error list! And, the site compiles, runs, and publishes perfectly! Total annoyance! I believe this is an error caused by the inclusion of the JQuery library and some inability of the Intellisense parser to “play nice in the playground”. Okay, so what’s the [workaround]? You can force an update of Intellisense with the following ......