Ok finally I got the topic which can help me a lot, Actually I have a VPS installed Webuzo on that but .htaccess is ignored by Apache dunno the exact reason,, can anyone help me to fix it?
Webuzo is great, but it is able to work using NGINX or Apache, check that it isn't running NGINX, as this would ignore .htaccess files.
If it's running NGINX it should be trivial to switch back to apache.
Webuzo is defaulted to LEMP stack when installed now so you will have to either change back to Apache or deal with the .htaccess stuff manually within Nginx config. http://wiki.nginx.org/Configuration
If you have NGINX set as your default service, the .htaccess equivalent will have to be written the nginx configuration file located at /usr/local/apps/nginx/etc/conf.d/common
Make sure you restart the NGINX service.
Root > service nginx restart