Article ID: 124824, created on Mar 12, 2015, last review on Mar 12, 2015

  • Applies to:
  • Plesk 12.0 for Linux
  • Plesk 11.0 for Linux
  • Plesk 11.5 for Linux
  • Plesk 11.5 for Windows
  • Plesk 10.4 for Windows


When logging in to Plesk, the following warning apears:

    This ca root certificate is not trusted. to enable trust install this certificate in the trusted root certification store.


Self signed Certificate is used and it is located in the certificate store for the local computer.

Root CA certificate is not installed properly.


Install the certificate in the trusted root certification store. Refer to the following Microsoft article to find out how to add root certificate:

Search Words

keychain broken

error ssl

certificate issue


secure the plesk panel not working

SSL cert “err_cert_authority_invalid” on mobile chrome only

85a92ca67f2200d36506862eaa6ed6b8 56797cefb1efc9130f7c48a7d1db0f0c a914db3fdc7a53ddcfd1b2db8f5a1b9c aea4cd7bfd353ad7a1341a257ad4724a 29d1e90fd304f01e6420fbe60f66f838 0a53c5a9ca65a74d37ef5c5eaeb55d7f 01bc4c8cf5b7f01f815a7ada004154a2 2a5151f57629129e26ff206d171fbb5f e335d9adf7edffca6a8af8039031a4c7 ff5a00b8ead2e480367b019417a04207 c796c01d6951fa24ed54c7f1111667c6 46a8e394d6fa13134808921036a34da8 bd7fc88cf1b01f097749ae6f87272128

Email subscription for changes to this article
Save as PDF