Why am I receiving “There was an error with the system, please try again later” when I sign into MyUSPTO?

Older versions of Internet Explorer 11 and Safari 11 are causing error messages with the MyUSPTO sign in feature.  If you are unable to update your browser version or use an alternate browser (e.g., Google Chrome, Mozilla Firefox) please sign by using https://fees.uspto.gov/ and selecting MyUSPTO under your personal account icon.