Unable to install Let's Encrypt certificate: 502 bad gateway

Created:

2017-04-21 09:04:18 UTC

Modified:

2017-08-16 09:32:27 UTC

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Unable to install Let's Encrypt certificate: 502 bad gateway

Symptoms

The following error occurs while installing Let's Encrypt certificate:

Internal Error ;-P
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<head><title>502 Bad Gateway</title></head>
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<center><h1>502 Bad Gateway</h1></center>
<hr><center>nginx</center>
</body>
</html>
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Cause

Installation of one of microupdates was nor finished successfully.

Resolution

1. Connect to the server using SSH/RDP.

2. Reinstall Plesk microupdates and upgrade installed components by executing the following command:

# plesk installer --select-release-current --reinstall-patch --upgrade-installed-components
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