Server error, why this error message appears when i use .htaccess

when I use .htaccess file inside a folder named admin with the following code

AuthName "Alertme"
AuthType Basic
AuthUserFile /mobs/.htpasswd
require valid-user 

and .htpasswd file with following code

rajasekar:66Acdia7gE1to

While accessing 开发者_如何学JAVAthe file inside folder, it gives server error, The server encountered an internal error and was unable to complete your request

why is this happening. help me

Most likely your Apache config does now allow Auth* directives in .htaccess in that directory and/or location. You can check for sure why looking in the error_log for that host. There'll be a line that looks like:

[Wed Dec 02 22:13:14 2009] [alert] [client x.x.x.x] /path/leading/to/.htaccess: AuthName not allowed here

This error will show up as a "500 Internal Server" error for any client attempting to access that particular server/directory.

You will need to add an "AllowOverride AuthConfig" so Apache will accept the Auth directives in the .htaccess. Details are here in the Apache docs.

Make sure that /mobs/.htpasswd is absolute (not relative to your webroot) path on your filesystem

This usually happens when your htaccess and/or htpasswd file can't be read by apache. Either because the user apache is running under doesn't have the needed rights on these files.