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To fully complete the SSL certificate chain, you must see that the chain of trust is intact by including both intermediate and root certificates. If you have a PrimeSSL certificate with ECC key encryption and domain validation, you will need to install the intermediate certificate to correctly chain to the Sectigo Public Server Authentication Root E46.
Download or copy the intermediate certificate from the PrimeSSL CA bundle. It is powered by Sectigo’s Public Server Authentication Root E46 and includes ECC encryption with domain validation.
For installation, simply copy the full certificate, including the —–BEGIN CERTIFICATE—– and —–END CERTIFICATE—– lines, into a text editor and save it on your server.
-----BEGIN CERTIFICATE-----
MIIDXjCCAuSgAwIBAgIQfUIL2k5wVm0fdVXn4j7CMTAKBggqhkjOPQQDAzBfMQsw
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MBaAFNEi2kxZ8UtfJjiqndbu6w3D+6lhMB0GA1UdDgQWBBTEbS+xfSLP+kQTqsup
5Q9GunM+ZDAOBgNVHQ8BAf8EBAMCAYYwEgYDVR0TAQH/BAgwBgEB/wIBADAdBgNV
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AjBVkpBqF0/0jzKXqf42Y3LDNM7aUyEeKM/vn6Mn5wB6eu76G2oSVieGBEPnRGtB
fPk=
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
MIIDRjCCAsugAwIBAgIQGp6v7G3o4ZtcGTFBto2Q3TAKBggqhkjOPQQDAzCBiDEL
MAkGA1UEBhMCVVMxEzARBgNVBAgTCk5ldyBKZXJzZXkxFDASBgNVBAcTC0plcnNl
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49IWa2wdT7R3DtODaSXH/BiXv8fwB9su4tU=
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
MIICjzCCAhWgAwIBAgIQXIuZxVqUxdJxVt7NiYDMJjAKBggqhkjOPQQDAzCBiDEL
MAkGA1UEBhMCVVMxEzARBgNVBAgTCk5ldyBKZXJzZXkxFDASBgNVBAcTC0plcnNl
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RNZu9YO6bVi9JNlWSOrvxKJGgYhqOkbRqZtNyWHa0V1Xahg=
-----END CERTIFICATE-----
