Office documents prompt for login in anonymous SharePoint site

Question

I have a MOSS 07 site that is configured for anonymous access. There is a document library within this site that also has anonymous access enabled. When an anonymous user clicks

Answer 1

My guess is that the Office client is loading the underlying document template from another location where anonymous access is enabled. This also explains why you can still open the document as the Office client can also work without loading the template the document was originally created from. To see the template URL in Word 2007, enable the Developer Ribbon from Word options and click the Document Template button on the ribbon.

Answer 2

We were able to get this working by changing IE settings.

We have the site URL in Trusted Sites. Under Custom Settings set User Authentication to: Automatic logon with current user name and password

Answer 3

If you can click cancel and it comes up the problem is... AuthForwardServerList

http://support.microsoft.com/kb/943280

Office doesn't know the site is trusted/local so it doesn't fwd your credentials and prompts you with an opportunity to provide them. It's a feature....

If you list your site in the proper registry key it will forward your credentials which are not needed but you won't get prompted.

Answer 4

If you have a url rewriting module or urlscan, configure the software to send http 403 to http OPTIONS requests.