If this matches your need I can expand into a full formal KB article, provide exact CLI commands for your ESXi version, or tailor it to ESXi 6.7/7.0/8.0—tell me which.
To resolve this, you must manually install two specific Microsoft updates that add SHA-2 support to your guest OS. kbvmware s article 78708 free
Today, while the specific error is less common in modern versions of vSphere, the number 78708 remains a nostalgic footnote for administrators who spent late nights restarting management agents to bring their virtual worlds back to life. If this matches your need I can expand