Why do I get the iCloud message over and over since upgrading to 10.3.1

[iMore Question]

Why do I get the message over and over if I want to continue to use iCloud on this device go to one o fly other device on this account and approve this device.

 

[Tartarus]

Seems like you enabled two factor authentication.
I'm sure if you follow the steps it will all be okay.
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