How long are the log-ins valid until start of session?

TSCGN

We use TeamViewer 15.1.3937QSC which is provided by our software provider and is also branded as such.

My question is: How long are the log-in data (i.e. ID and password) valid when not in use?

So not how long they are valid DURING a session.

But how long they are valid UNTIL you start the session?

Thank you very much!