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Let's Encrypt certificate can not be renewed automatically for domain in Plesk: Invalid hostname in redirect target, must end in IANA registered TLD

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Alex Davydov
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Plesk for Windows kb: technical ext: le ext: sslit

Applicable to:

  • Plesk for Windows

Symptoms

Let's Encrypt certificate for a particular domain in Plesk can not be renewed automatically with the error message below:

Failed to renew certificate of domain 'example.com': Invalid response from https://acme-v02.api.letsencrypt.org/acme/authz-v3/13769068820.
Details:
Type: urn:ietf:params:acme:error:connection
Status: 400
Detail: Fetching https://acme-challenge.localhost:443/.well-known/acme-challenge/jhpl_titvpnxqcffch5s9semwhzx1ytmjnhnngeyqek:
Invalid hostname in redirect target, must end in IANA registered TLD

Cause

Module runAllManagedModulesForAllRequests is enabled in the domain's web.config file.

The lines below exist in %plesk_vhosts%example.com\httpdocs\web.config:

<modules 
 runAllManagedModulesForAllRequests=“true”>
   ...
</modules>

Resolution

  1. Log into Plesk.

  2. Go to Domains > example.com > File Manager page.

  3. Click on the file named web.config to open it for editing.

  4. Disable the runAllManagedModulesForAllRequests module by modifying the lines as below:

    • Before:

      <modules
      runAllManagedModulesForAllRequests=“true”>
      ...
      </modules>

    • After:

      <modules
      runAllManagedModulesForAllRequests=“false”>
      ...
      </modules>

  5. Press Save button to apply changes.

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