Bo Explorer: Failed to lookup DataDiscovery services

Hello,

I have a Polestar (BO Explorer) installation on a BOE XI 3.1 Server.

Since today it is not possible form me to login at the BO Exlorer. After the click at the "Login Button" appears an error message ("Failed to lookup DataDiscovery services") at the login screen.

I've checked the four BO Explorer Server in the CMC (polestarExploration / polestarIndexing / polestarMaster and polestarSearch). Every Server is running and aktive. Also a restart of the complete BO system (BO Explorer Server / Tomcat, and so on ...) brings no success.

Have anyone of you a solution for this error?

Thanks in advance...