This happens because the Calendar application hasn't been updated to use a CSRF token in its forms and XWiki expects that by default. You have two choices: 1) If you have a bit of a dev skill (or if you convince someone to do it for you), add the CSRF token to the HTML forms like this: <input name="form_token" value="$!services.csrf.token" type="hidden" /> 2) Disable the http://en.wikipedia.org/wiki/Cross-site_request_forgery protection from xwiki.properties file. Hope this helps, Marius On Mon, Nov 11, 2013 at 4:19 PM, Helen Stockebrand <[email protected]> wrote:

I have been trying to enter a new event in the calendar on the EventCaledar page only to be given the message below. I only have the one page open, no one else is editing the page (at least not one that is owning up to it), and I am logged in as administrator. I can't seem to get what I am doing wrong. please help!

Thanks!

Warning

This request contains an invalid authentication information.

This might happen in the following situations:

You left the editor open in another window/tab and logged off and on again Your authentication token exipired after a long period of inactivity Somebody tried to perform a CSRF attack

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