[astrastar]

Hallo Jimmy

By default, versions of Windows Internet Explorer that were released starting with the release of security update 832894 do not support handling user names and passwords in HTTP and HTTP with Secure Sockets Layer (SSL) or HTTPS URLs. The following URL syntax is not supported in Internet Explorer or in Windows Explorer:
http(s)://username : password@server/resource.ext

mehr dazu hier
Internet Explorer does not support user names and passwords in Web site addresses (HTTP or HTTPS URLs)

Gruß
astrastar