QuoteAs a major move to the more secure SHA-2 algorithm, Microsoft will allow the Secure Hash Algorithm 1 (SHA-1) Trusted Root Certificate Authority to expire. Beginning May 9, 2021 at 4:00 PM Pacific Time, all major Microsoft processes and services—including TLS certificates, code signing and file hashing—will use the SHA-2 algorithm exclusively.
Additional information at the source: Microsoft to use SHA-2 exclusively starting May 9, 2021 - Microsoft Tech Community (https://techcommunity.microsoft.com/t5/windows-it-pro-blog/microsoft-to-use-sha-2-exclusively-starting-may-9-2021/ba-p/2261924#.YHdccDltB4w.twitter).