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security issue plesk panel

Hi,

your cert is fine. the error only shows, that it was not issued by a certificate authority, like Comodo, Thawte and etc., in other words, it is a self-signed certificate. To fix the problem, you basically have to buy a certificate for that particular domain from a certificate authority provider and install it on your Plesk server, if you are authorized to do so. Checkout the provider list on Wiki https://en.wikipedia.org/wiki/Certificate_authority

Hope this helps.
 
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