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Documenting Problems That Were Difficult To Find The Answer To

Linux Citrix Receiver – SSL Error – AddTrust External CA Root

I received the following error after installing the Citrix Receiver for Linux:

SSL error
Contact your help desk with the following information: You have not chosen to trust “AddTrust External CA Root”, the issuer of the server’s security certificate (SSL error 61).

Error message about AddTrust External CA Root

Error message about AddTrust External CA Root

One recommendation is to copy all the certificates from Mozilla’s certificate store to the Citrix store:

cp /usr/share/ca-certificates/mozilla/* /usr/lib/ICAClient/keystore/cacerts/
cp /usr/share/ca-certificates/mozilla/* /opt/Citrix/ICAClient/keystore/cacerts/

But I chose to download addtrustexternalcaroot.crt from Comodo into /opt/Citrix/ICAClient/keystore/cacerts/ and attempt the connection again – this worked for me.

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