System Config page at backend is showing Blank page

Question

It shows blank page when navigating to System -> Configuration as shown in below image-

and after changing in 'current configuration scope' dropdown to any website view or store view it shows 404 error on the page like below.

I don't know why it's happening, may be any module is cause of this or anything else ?

Please suggest.

Thanks

Answer 1

This is because some extension you installed lately is incorrectly overriding admin layout/routes.

I had the same issue with "extended google sitemap" extension. Admin was showing 404 if click "System > Configuration" dropdown menu.

You see "save config" yellow button in the top right corner? Look in sources/or click it, it will show you where is the issue. (see headers or network tab in browser developers tools)

Also make sure your account have full ACL access rights to every page and module.

Answer 2

1) Clear magento cache.

2) Logout from admin panel and login again.