https://www.alitajran.com/export-lets-encrypt-certificate-in-windows-server/
private 憑証所在位置:
C:\ProgramData\win-acme\acme-v02.api.letsencrypt.org\Certificates
憑証要安裝在"本機", 並記得允許匯出
Select A to manage renewals
Select D to show the renewal details