經過多次改動後，微軟這次宣佈 SHA-1 certificate 將在明年淘汰：「SHA-1 deprecation countdown」。
影響的範圍包括 Internet Explorer 11 與 Microsoft Edge，在 2017 年 2 月 14 日之後不信任 SHA-1 certificate：
Starting on February 14th, 2017, Microsoft Edge and Internet Explorer 11 will prevent sites that are protected with a SHA-1 certificate from loading and will display an invalid certificate warning.
與其他家類似，還是提供了管道讓企業內部建立的 SHA-1 certificate 可以用：
This will only impact SHA-1 certificates that chain to a Microsoft Trusted Root CA. Manually-installed enterprise or self-signed SHA-1 certificates will not be impacted, although we recommend for all customers to quickly migrate to SHA-256.