Edge: 401 without credential prompt

[MichaelLangbein]

• reason: no basic auth allowed in edge://policy/
• short term solution: change policy: https://docs.microsoft.com/de-de/DeployEdge/configure-microsoft-edge
• long term: will use other authentication mechanism.
  • But this can only work once middleware is online.

[MichaelLangbein]

Using https now.