error/moodle/invalidsesskey

Some reasons why you might have got an "Invalid Sesskey" message are:

1. Your site doesn't have the PHP setting "session.auto_start=0" (see Installing Moodle - software)
2. You logged out at some time between opening the form and submitting it.
3. You have followed a bad link to a form script.
4. Your database has an incorrect value for sessioncookiepath in the mdl_config table.
5. You edited the code in a file on the server while logged in to your moodle website.

See also

• Using Moodle incorrect sesskey - occasional failures forum discussion