Issuing/renewing Let's Encrypt certificate on Plesk for Windows server fails: https://acme-challenge.localhost Invalid hostname in redirect target, must end in IANA registered TLD



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    Yener Adal

    I have this issue but I don't have a .htaccess file or the ISAPI_Rewrite 3 filter. I believe it has to do with HSTS "Redirect Http to Https" being enabled.

    When I disable this setting, the renewal is successful.

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