Error when i want to open my forum

mj1919

Hello friends
I update DiscuzX2.5ML to X3ML, today.
when i want to open my forum, i see below error![ from A-cp>Global>base settings>(Close the site: No)
Ucenter also shows this error!

what can i do? thank you

(in other domain-and other host-, i can enable and disable this function without any error,)

403 ForbiddenAccess to this resource on the server is denied!

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mj1919

vot

The screenshot can not explain the problem.
What the URL is in the right-bottom frame (where error 403)?
( FireFox:: Right Click : This frame : Frame info )

mj1919

vot 2013-8-27 20:55
The screenshot can not explain the problem.
What the URL is in the right-bottom frame (where error 4 ...

adress:http://mysite/admin.php?action=setting&edit=yes
reffering URL: http://mysite/admin.php?action=setting&operation=basic

vot

Check all your .htaccess