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Cannot Login to Office 365 - Certificate Issue

I cannot successfully login to Office 365 dashboard through the GoDaddy login page. I receive message "AADSTS5000811: Unable to verify token signature. The signing key identifier does not match any valid registered keys."


I called GoDaddy support yesterday who concluded that they couldn't see anything wrong and I should try logging in another day to see if it was fixed. They also said it was outside of their support. Tried login today, same message.


I can still use all Office applications incl. mail etc no problem. It is the main Office 365 organisation login I cannot access. 


Does anyone know how to update tokens? I use a Mac. It may be a coincidence but I only recently renewed Office 365 with GoDaddy. I think this is the first time I have tried to login since renewal.