- Plesk for Windows
Wrong CA certificate is added to the certificate's chain:
Let's Encrypt Authority X1
is used instead of
Let's Encrypt Authority X3
This behavior caused by specific algorithm of Let's Encrypt certificate.
Remove X1 certificate from
Intermediate Certification Authorities
Start > certmgr.msc> Trusted Root/Intermediate Certification Authorities
Remove the following regedit records related to certificates:
reg delete HKU\S-1-5-18\Software\Microsoft\SystemCertificates\CA\Certificates\3EAE91937EC85D74483FF4B77B07B43E2AF36BF4 /f
reg delete HKLM\Software\Microsoft\SystemCertificates\CA\Certificates\3EAE91937EC85D74483FF4B77B07B43E2AF36BF4 /f
- If the issue persists, reassign the certificate by selecting None and then back in domain's Hosting Settings .
Additional information can be found here .