Forum Permissions for Guest --> View attachments to posts: NO
The Errors:
403 - Forbidden: Access is denied.
You do not have permission to view this directory or page using the credentials that you supplied.
OR
HTTP 500
Forum Permissions for Guest --> View attachments to posts: YES
When...
My website hosted on godaddy
IIS VersionIIS 7.0
NET VersionASP.Net 2.0/3.0/3.5
I uploaded web.config file (Described at https://xenforo.com/help/friendly-urls/)
My admin control panel >> Options and then activate Search Engine Optimisation
URL...