Most major web browsers are preparing to drop support for legacy versions of the Transport Layer Security (TLS) protocol, as they can pose a security risk compared to newer versions. Microsoft initially announced its plans to drop TLS 1.0 and 1.1 in October 2018, and today, the company has provided an updated roadmap for the deprecation.
Much like Google Chrome, Microsoft intended to remove support for these versions in the first half of the year, but due to the circumstances related to the coronavirus outbreak, the change has been somewhat delayed. Microsoft also announced today that it will be skipping version 82 of the Edge browser because of this situation.
For the Chromium-based of Microsoft Edge, support for these legacy versions of TLS will be removed with version 84 at the earliest, and that's currently planned for release in July. For Internet Explorer 11 and Edge Legacy (the EdgeHTML-powered version), support for these versions will be disabled by default starting on September 8, when the company will release its monthly Windows updates on Patch Tuesday.
Most websites are already using newer versions of TLS, so end users aren't likely to encounter any major issues when support for older versions is removed. Website owners that are still using older versions of TLS now have a little more time to make the transition.
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