AuthType Digest and '<null>' users...

[AITSL]

I am trying to password protect a folder on my system for admin rights but for some reason I keep getting an error "access to /admin failed, reason: verification of user id '<null>' not configured".

I have recreated my password file (using htdigest) and have the Directory set as follows in my httpd.conf file:

<Directory "D:\Inetpub\

http://wwwroot\smuir-uk-ltd.co.uk\admin">

AuthType Digest
AuthName "S. Muir (UK) Ltd. Admin Area"
AuthUserFile D:\Inetpub\

http://wwwroot\pw_config\smuiruk

Require valid-user
</Directory>

I used to have it working but recently I did a reformat of my system and now it won't work. Like an idiot, I forgot to backup my original httpd.conf file!

Can anyone advise as to what I maybe doing wrong?

Apache 2.2 / PHP 5.2.6 running on Windows XP Pro SP3.

 

[AITSL]

OK< I figured it out myself. Firstly I had to add the module in (I thought it was active by default) and secondly, I was using an incorrect AuthName.