People can not connect to the server (could not verify ticket)

[LoveSeeker]

I get this in the server console when people try to connect to the server:

Could not verify ticket "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" for user with id 3886487: expired

[LoveSeeker]

I reinstalled the server and now is fine

[Xerxes]

For the record, the main cause is a wrong system clock.