Unable to issue Let's Encrypt certificate in Plesk: "Timeout during connect (likely firewall problem)" OR "Error getting validation data"

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    Richard Rudy

    I'm getting this error even though the port is showing as open and all other domains on the same machine can renew their certificate 

  • Avatar
    Ivan Postnikov

    Hello @Richard,

    In this case, the most probable cause of such behavior is 301/302 redirect configured for this website.

    Please, try this:

    If 301 redirect is enabled:

    Go to Domains > example.com > Hosting Settings and perform the following steps:

    • Set Preferred domain to none.

    • Uncheck the option Permanent SEO-safe 301 redirect from HTTP to HTTPS.

    • Issue a Let's Encrypt certificate in Domains > example.com > Let's Encrypt.

    If 302 redirect is enabled:

    Go to Domains > example.com > Hosting Settings and perform the following steps:

    •  Turn off domain forwarding by changing Hosting type to Hosting.

    • Issue a Let's Encrypt certificate in Domains > example.com > Let's Encrypt.

     In case this does not help, inspect website code and website configuration for hardcoded redirects.

  • Avatar
    Richard Rudy

    301 and 302 redirects are off. I even tried creating a new subscription to ensure no extra code was creating errors with the redirect.

  • Avatar
    Maxim Krasikov

    Hello @Ricard,

    Please contact Plesk technical support for assistance:
    https://support.plesk.com/hc/en-us/requests/new

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