Windows 10: Modernizing TLS connections in Microsoft Edge and Internet Explorer 11

Brink · Oct 15, 2018

Today, we’re announcing our intent to disable Transport Layer Security (TLS) 1.0 and 1.1 by default in supported versions of Microsoft Edge and Internet Explorer 11 in the first half of 2020.This change, alongside similar announcements from other browser vendors, supports more performant, secure connections, helping advance a safer browsing experience for everyone.

January 19th of next year marks the 20th anniversary of TLS 1.0, the inaugural version of the protocol that encrypts and authenticates secure connections across the web. Over the last 20 years, successor versions of TLS have grown more advanced, culminating with the publication of TLS 1.3, which is currently in development for a future version of Microsoft Edge.

Two decades is a long time for a security technology to stand unmodified. While we aren’t aware of significant vulnerabilities with our up-to-date implementations of TLS 1.0 and TLS 1.1, vulnerable third-party implementations do exist. Moving to newer versions helps ensure a more secure Web for everyone. Additionally, we expect the IETF to formally deprecate TLS 1.0 and 1.1 later this year, at which point protocol vulnerabilities in these versions will no longer be addressed by the IETF.

For these reasons, sites should begin to move off of TLS 1.0 and 1.1 as soon as is practical. Newer versions enable more modern cryptography and are broadly supported across modern browsers.

Getting your sites and organizations ready

Most sites should not be impacted by this change. As TLS 1.0 continues to age, many sites have already moved to newer versions of the protocol – data from SSL Labs shows that 94% of sites already support TLS 1.2, and less than one percent of daily connections in Microsoft Edge are using TLS 1.0 or 1.1.

We are announcing our intent to disable these versions by default early, to allow the small portion of remaining sites sufficient time to upgrade to a newer version. You can test the impact of this change today by opening the Internet Options Control Panel in Windows and unchecking the “Use TLS 1.0” and “Use TLS 1.1” options (under Advanced -> Security).

– Kyle Pflug, Senior Program Manager, Microsoft Edge
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Source: Modernizing TLS connections in Microsoft Edge and Internet Explorer 11 - Microsoft Edge Dev Blog

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curatia · Oct 15, 2018

Microsoft Edge TLS Security

After trying everything (not a lot of steps) listed in the Microsoft Edge support site, I did a wider search and found this very simple youtube video that fixed it immediately:

For those who prefer not to click links the steps are simple:

1. Click in the Cortana search bar next to the Win 10 Start button

2. Type internet options

3. Select internet options (control panel) from the list

4. Click on the advanced tab

5. Scroll down to the security section

6. Make sure the following are all clicked:
Use SSL 3.0
Use TLS 1.0
Use TLS 1.1
Use TLS 1.2

7. Click apply

8. Refresh the page that was giving the error and it should now connect.

Hope this helps, it was a 30 second fix after hours of pounding my head against the error with the Support site suggestions.

mixa · Oct 15, 2018

Microsoft Internet Explorer renamed to Windows Internet Explorer ?

Since version 7 of the world`s most popular web browser - Microsoft Internet Explorer was silently renamed to Windows Internet Explorer.Such a step from Microsoft is not a surprise since Internet Explorer is part of the Windows operation system for a long time.Obviously Microsoft corp. wants to state that Internet Explorer is already considered as a part of Windows and not as an external browser (remember the IE and WMP law issues last year!?).

Brink · Oct 15, 2018

RC4 is now deprecated in Microsoft Edge and Internet Explorer 11

In September 2015, Microsoft announced the end-of-support for the RC4 cipher in Microsoft Edge and Internet Explorer 11 in 2016, as there is consensus across the industry that RC4 is no longer cryptographically secure.

Today, we are releasing KB3151631 with the August 9, 2016 cumulative updates for Windows and IE, which disables RC4 in Microsoft Edge (Windows 10) and IE11 (Windows 7 and newer). This matches the most recent versions of Google Chrome and Mozilla Firefox.

What is RC4?

RC4 is a stream cipher that was first described in 1987, and has been widely supported across web browsers and online services. Modern attacks have demonstrated that RC4 can be broken within hours or days. The typical attacks on RC4 exploit biases in the RC4 keystream to recover repeatedly encrypted plaintexts. In February 2015, these new attacks prompted the Internet Engineering Task Force to prohibit the use of RC4 with TLS.

Previously, Microsoft Edge and Internet Explorer 11 allowed RC4 during a fallback from TLS 1.2 or 1.1 to TLS 1.0. A fallback to TLS 1.0 with RC4 is most often the result of an innocent error, but this is indistinguishable from a man-in-the-middle attack. For this reason, RC4 is now entirely disabled by default for Microsoft Edge and Internet Explorer users on Windows 7, Windows 8.1 and Windows 10.

How can I prepare?

We expect that most users will not notice this change. The percentage of insecure web services that support only RC4 is known to be small and shrinking.

If your web service relies on RC4, you will need to take action. Since 2013, Microsoft has recommended that customers enable TLS 1.2 in their services and remove support for RC4. For additional details, please see Security Advisory 2868725. For supported ciphers, and additional information on ciphers see: Cipher Suites in TLS/SSL (Schannel SSP).

– Brent Mills, Senior Program Manager, Windows Experience
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Source: RC4 is now deprecated in Microsoft Edge and Internet Explorer 11 | Microsoft Edge Dev Blog

Windows 10: Modernizing TLS connections in Microsoft Edge and Internet Explorer 11

Modernizing TLS connections in Microsoft Edge and Internet Explorer 11

Modernizing TLS connections in Microsoft Edge and Internet Explorer 11

Modernizing TLS connections in Microsoft Edge and Internet Explorer 11

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