'Invalid security token' on Joomla login

Question

I am getting the following error at the time of log in to my Joomla site. Though it is not showing this error all the time and i logged in successfully several times. What is the reason of this?

The most recent request was denied because it contained an invalid security token. Please refresh the page and try again.

Answer 1

This usually occurs because you've tried to log in after backing up to the login page, where a token has already been stored. You can usually resolve it with a hard refresh (shift-refresh) or by clearing cookies.

Answer 2

The problem was caused due to active session (not closed properly) in the Joomla! sessions table.

Follow below steps to resolve these errors:

1. Login to cPanel.
2. Access the DB using PhPmyAdmin.
3. Delete all the user sessions from the 'vnto1_session' table.

Now website is accessible without any errors.

Answer 3

I remove current web.config and rename/insert default web.config in joomla installation folder to installed joomla folder and check the php is correctly installed in IIS.