Using GPO : how to add to trusted certificate

Hello guys,

i've been looking for this topic on this website and didn't find anything about it.

I'm using a "homemade" certificate for me and other people. We all need to sign documents but those certificates are not trusted by AdobeReady (that's normal).

We all have the yellow message "At least one signature has problems".

Using a GPO, is it possible to add my homemade ROOT CA as a trusted certificate for AdobeReaderDC and have the green message "Signed and all signatures are valid" instead of the one that i already have.

thanks for your help

Cheers.