Antwort
Probier es Mal damit
Bei mir hat es geholfen da der Teredo der von Microsoft bereitgestellt wird immer wieder Probleme macht
Commands
1. Open Cmd (as admin) and type in: netsh interface Teredo set state disable
2. restart the computer and type in cmd: netsh interface Teredo set state type=default
3. then type in netsh interface teredo show state, if it works you are done, if not
4. change client to enterpriseclient: Netsh Int Teredo Set State Enterpriseclient, if it works you are done if not
5. change server to: netsh interface teredo set state servername=teredo.remlab.net