On September 28 2020 Microsoft 365 Service went down, what caused it? and what did Microsoft did to solve it.
Resources
https://twitter.com/msft365status/status/1310696819135901696?s=21
https://status.office.com/
https://answers.microsoft.com/en-us/msoffice/forum/msoffice_account-mso_imobile-mso_o365b/error-aadsts90033/d2ba3ef2-fe85-411d-b4fe-5c44df1e121c
https://answers.microsoft.com/en-us/msoffice/forum/msoffice_o365admin-mso_other-mso_o365b/aadsts90033-a-transient-error-has-occurred-please/8117f18e-9de9-46d7-9505-1708b2a1c732
https://docs.microsoft.com/en-us/answers/questions/35944/aadsts90033-a-transient-error-has-occurred-please.html