Apr 30, 2021
CMS recently applied a security improvement to iQIES (https://iqies.cms.gov) and QTSO (https://qtso.cms.gov) URLs. This upgrade may interfere with your user experience if your browser security protocols are not in compliance.
If you receive a "mismatch cipher" error or references to unsupported protocols from your browser, you may need to work with your IT support team to ensure your browser supports Transport Layer Security (TLS) 1.2 and then one of these three PFS ciphers:
Thank you for upgrading your systems to ensure security compliance and improve your user experience with CMS systems.