Desktop Search

iQIES and QTSO Security Update Notification

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" errorĀ 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:

ECDHE_RSA_WITH_AES_256_GCM_SHA384
ECDHE_RSA_WITH_AES_128_GCM_SHA256
ECDHE_RSA_WITH_CHACHA20_POLY 1305_SHA256

Thank you for upgrading your systems to ensure security compliance and improve your user experience with CMS systems.

Last Modified on 4/30/2021