Hi,

since we are using Windows 8.1 on our Lenovo laptop, we have issues with some of the web applications we use in the internet.

For example we get the additional info at one web application, that this application should use stronger hashfunction than SHA-1.

Are there special browser settings needed to bypass this issue or similar issues under Windows 8.1?

Or do we have to wait until web applications are migrated to Windows 8? 

Thanks Michael

You cannot. You are probably using Chrome as the browser, right? The world is slowly getting rid of SHA-1.

Microsoft was the first to announce a deprecation plan for SHA-1, where Windows and Internet Explorer will distrust SHA-1 certificates after 2016. Mozilla has decided on the same thing. Neither Microsoft nor Mozilla have indicated they plan to change their user interface in the interim to suggest to the user that there's a problem.

Google, on the other hand, recently dropped a truth bomb by announcing that Chrome would show warnings to the user right away, because SHA-1 is just too weak:

Source: Why Google is Hurrying the Web to Kill SHA-1
https://konklone.com/post/why-google-is-hurrying-the-web-to-kill-sha-1