Replication error

When I try to start a replication between my on-premise HyperV server and Azure it fails with the following message

Error-id 70094 Errormessage Can not enable protection for the virtual machine. Providererror Errorcode of the provider: 31389

Errorcode of the provider: Job 'Enabling Replication' (08AA8622-CBB6-436D-AF7D-1E61367E4F7D) failed. Job State Exception. Error Code: 32768. ErrorSummaryDescription: Hyper-V failed to enable replication.. ErrorDescription: Hyper-V failed to enable replication for virtual machine '': Unspecified error (0x80004005). (Virtual machine ID 6F199BE3-AAA4-4C5E-B4C6-47060DBB5651).

The evaluation was without any issues.

Can somebody help me?

kind regards Marco