Don't have permission

I have a small problem, when i save in the configuration of Hikashop
I get the following message "You don't have permission to access /administrator/index.php on this server"
I have not installed another plugin or component after installing Hikashop
the problem appeared suddenly at the beginning Hikashop it worked fine

any suggestions???

many thanks

Hi,

Never heard of that issue before.
Try to activate the debug mode of joomla and try again. Please do a screenshot of the error also.

Hi Nicolas

Ι activate the debug mode but unfortunately nothing has changed

I attach the screenshot

many thanks

That's an apache error message which says that the file administrator/index.php cannot be accessed because of access rights. If you have that error message it means that there is a problem with your apache setup. Apparently, it happens sometimes with joomla and mod_security. Here is more information about the problem with some solutions to disable mod_security for the back end of joomla:
joomlacode.org/gf/project/joomla/tracker...tracker_item_id=8900

But you might also want to ask your hosting company about the problem.