Symptoms SSO administrator is locked or expired. Purpose You must unlock and reset the vCenter Single Sign-On (SSO) password if you have entered an incorrect password for three times and you see the error: User account is locked. Please contact your administrator. Resolution By default, the account lockout policy is set to unlock after 15 minutes. If the account does not get unlocked even after 15 minutes, you must unlock the account using another session that is still logged into the SSO server or using another user account with SSO administrator privileges. To unlock/reset the administrator account, see: vSphere 6.x - How to unlock and reset SSO administrator password in vSphere 6.x