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If you had already registered your account at Plesk 360 (formerly known as My Plesk) please use one for login. Otherwise please re-register it using the same email address as your existing Zendesk login (support account). It’s essential that you use the same email address on our support center to ensure that your tickets stay attached to the same account.

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Not possible to connect server to Plesk 360: The server has an invalid certificate

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Mikhail Shport
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Plesk 360

Symptoms

  • Unable to add a server to Plesk 360 with one of the errors below:

    PLESK_ERROR: The server has an invalid certificate

    PLESK_ERROR: Hostname/IP does not match certificate's altnames

  • Server is added by using the IP address or by hostname without a valid certificate

Cause

Plesk URL used to connect server is not secured by a valid certificate.

Resolution

Make sure to connect Plesk using a valid secured domain name.
If it is needed, Plesk URL might be secured with a valid certificate by following the instructions from the article below:
How to secure a Plesk hostname on port 8443 with an SSL certificate (Let's Encrypt / other certificate authorities)

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