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In order to generate and validate the PIN, the authentication servers needs an accurate time. For this a periodic time sync with a time server is needed. If the server has no internet access and no local NTP server is configured, the sync will run in a time out.
Solution(s)
Add a time server to CoreOne Authentication Service settings
NtpTimeServer,NistTimeServerorHttpTimeServer(available for versions >= 6.x)Configure a local NTP server and point one of the servers documented here to that server.