[German]Microsoft is now getting serious and will discontinue support for insecure TLS protocols in Office 365 on October 15, 2020. The step had been announced for a long time, but was postponed again due to coronavirus. Maybe the information is of interest for one or the other administrator in the office environment.
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Background to the TLS topic
Transport Layer Security (TLS) is a hybrid encryption protocol for secure data transmission on the Internet. Historically, various TLS versions from 1.0 to 1.1 to 1.2 and more recently TLS 1.3 have been defined and are in use.
Since encryption in TLS 1.0 and 1.1 is no longer considered secure, the IT industry is gradually trying to switch to TLS 1.2 and/or TLS 1.3 for secure Internet connections. Microsoft is also counting on replacing TLS 1.0/1.1 (the announcement from 2018 about the discontinuation of TLS 1.0/1.1 in Edge and Internet Explorer can be found here), but has already experienced noticeable difficulties in the past.
Actually, TLS 1.0/1.1 in Microsoft Edge, Internet Explorer and also Office 365 should die in the first half of 2020. However, in the blog post Plan for change: TLS 1.0 and TLS 1.1 soon to be disabled by default, Microsoft overturned this plan in the face of the coronavirus pandemic..
Am 15. Oktober 2020 ist Schluss
In the document TLS 1.0 and 1.1 deprecation for Office 365 Microsoft made an amendment on 16 July 2020. Here is a screenshot of the page.
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There you will learn that Microsoft has temporarily stopped support for TLS 1.0 and 1.1 for commercial customers due to Covid-19. But as supply chains have adapted and certain countries are reopening, Microsoft wants to phase out support for TLS 1.0 and 1.1 on October 15, 2020.
The Transport Layer Security (TLS) 1.0 and 1.1 protocols for Office 365 are considered obsolete as of October 31, 2018. Microsoft expects that the impact of the shutdown will be minimal for end users. This change has been announced for more than two years, with the first public announcement made in December 2017. Bleeping Computer has compiled some additional information about TLS 1.0/1.1 shutdown here.
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