i have now 404 errors on all Blog content urls.

please how to fix ?

it doesn't do that when i'm on the native joomla seo

only when i turn on joomsef

Hello,

Go to Manage SEF URLs and please post some examples of the URLs that do not work, both their SEF and Real versions.

Best regards,
ARTIO Support Team

Under Mangage SEF url, in the Real url column i have :
index.php?option=com_content&id=16&lang=fr&layout=blog&view=category&Itemid=29

then on the sef url i have
fr/combloux-la-perle-du-mont-blanc/blog


If i take the domaine + the SEF REAL URL, it makes
domaine.com/index.php?option=com_content&id=16&lang=fr&layout=blog&view=category&Itemid=29
when i type it in explorer, it gives the 404 error

the url that should be shown inside the SELF REAL URL should be :
domaine.com/index.php?option=com_content&view=category&layout=blog&id=16&Itemid=29&lang=fr

but when i correct the real url inside SEF, it still don't work.

The URLs look OK - the different ordering of variables does not matter for Joomla, JoomSEF just stores the URL with option variable first and then the rest in alphabetical order to search it correctly in the database.
What kind of 404 error does the URL produce? The browser 404 page, or JoomSEF 404 page, or Joomla 404 error page? Could you post your website URL or send it to my e-mail ( Tato emailová adresa je chráněna před spamboty, abyste ji viděli, povolte JavaScript ) so I can see the problem myself?
Thank you.

Best regards,
ARTIO Support Team