Сегодня лечим ошибку в vCenter 7 вида: [400] An error occurred while sending an authentication request to the vCenter Single Sign-On server - An error occurred when processing metadata during vCenter Single Sign-On setup: the service provider validation failed. Verify that the server URL is correct and is in FQDN format, or that the hostname is a trusted service provider alias. Ошибка проявляется в том случае, если у вашего vCenter несколько доменный имён, или он находится за NAT. Просто данное FQDN или IP не принимается Single-Sign on (SSO)...
If you are using an application developed in Laravel you might get an error saying “419 page expired”. What is 419 page expired Lets first discuss the 419 HTTP status code. 419 status code indicates that authentication failed for a previously authenticated request or the authentication key/token has been expired...