Azure AD sign in errors (AADSTS error) troubleshooting

Constantly updated list of Azure AD sign in errors and possible solutions to those.

RSA SecurID Access SAML Configuration for Microsoft Office 365 issue – “AADSTS50008: Unable to verify token signature. The signing key identifier does not match any valid registered keys”

There recently have been couple cases when the customers who has configured the Azure AD federation with RSA SecureID by following these instructions https://community.rsa.com/docs/DOC-1019 were randomly experiencing the error during users sign in: “AADSTS50008: Unable to verify token signature. The signing key identifier does not match any valid registered keys”. The issue temporary goes away …