Products and categories with 404 error in Localhost but fine in Production

[Ramon Roca]

I try make a copy to my localhost from production store (magento 1.9) and all works great, only products and categories return 404 error.

My steps:
1. Copy src files from remote ftp to local folder
2. Copy remote mysql db to my local mysql
3. In htaccess change line RewriteBase /myfolder/
4. In db: UPDATE core_config_data
SET VALUE = 'http://localhost/myfolder/'
WHERE path = 'web/unsecure/base_url'
OR path = 'web/secure/base_url';
5. Write in /app/etc/local.xml my local db host, user and password

If I open homepage in http://localhost/myfolder works great
The same for contact page http://localhost/myfolder/fr/contacts

But I get 404 error for each product and category: http://localhost/myfolder/fr/exemple-product-idproduct.html

I forgot some step?

[Pronto]

Oh, there can be tons of reason .. from top of the head I can suggest few: cache, indexes, MAGE_RUN_CODE / MAGE_RUN_TYPE environment variables, URL Options, .htaccess issues or any combination of above.