https://www.bleepingcomputer.com/news/microsoft/microsoft-shares-solutions-for-windows-tls-failures-timeouts/

Microsoft has acknowledged a new issue affecting several Windows versions that could lead to Transport Layer Security (TLS) and Secure Sockets Layer (SSL) connections intermittently failing or getting timed out.

This bug is caused by the security-related enforcement for the CVE-2019-1318 TLS spoofing vulnerability, which leads to Windows devices experiencing failures and timeouts during TLS_DHE_* cipher suite negotiation.