Proxy authentication required
You must be authenticated by a proxy server before the Web server can execute your request.
Please try the following:
- Log on to your proxy server and try again.
- Contact the proxy server administrator if you believe you should be able to view this directory or page.
HTTP Error 407 - Initial proxy authentication required by the Web server.
Internet Information Services (IIS)
Technical Information (for support personnel)
- Go to Microsoft Product Support Services and perform a title search for the words HTTP and 407.
- Open IIS Help, which is accessible in IIS Manager (inetmgr),
and search for topics titled Authentication, About WebDAV, and About Custom Error Messages.