SSL installation also requires root and intermediate certificates forming a "chain of trust".
If at least one component is missing chain will be marked as non-trusted by some browsers.
Below is a list of the root and intermediate certificates divided per supplier and product.
Please note as "Comodo" had been renamed into "Sectigo" since 01.11.18.
Since 14.01.19 major part of Comodo products will change root certificates.
Products active since 14.01.19 will use new root during issuance and reissuance.
Products been active before 14.01.18 are using old "Comodo" root for issuance and will use it for reissuance.
Actual for certificates issued before 14.01.19 and actual for their further reissues.
Actual for certificates issued since 14.01.19 and actual for their further reissues.