I'm using default permalink and this site is prepared for launch.

Now client want permalink to become transformed.

I stick to the key to alter the permalink. But site cease working basically alter the permalink.

How do i alter the permalink without disturbing the website.

Thank You

You'll have to edit your .htaccess file and add the mod_rewrite rule. Within the Permalinks page, at the end, Wordpress provides you with this content you have to enter.

In latest WordPress, your .htaccess file is going to be auto up-to-date. Though whether it does not, improve your htaccess permission to 777 after which try altering permalink. once it's done, you are able to improve your .htaccess permission to 644. This is a tutorial: Changing WordPress Permalink