Has a recent patch disabled TLS1.2 and/or RSA on Internet Explorer?


Our office intranet has from today started refusing access from Internet Explorer 11 (necessary as it uses plugins) to a certain page. The error I get in IE is in Japanese, but talks about old TLS versions. If I look at the page with Chrome, on the Security page

Connection – obsolete connection settings

The connection to this site is encrypted and authenticated using TLS 1.2, RSA, and AES_256_GCM.

RSA key exchange is obsolete. Enable an ECDHE-based cipher suite.

I know that the deprecation date for TLS 1.2 has been extended due to COVID-19, but a recent patch seems to have fixed CVE-2020-1118, but in the process might it have broken something else? Note, I do allow TLS 1.2 connections in IE.