Oracle contracts - Download Add-in for Microsoft word feature error post installation

Summary:

Once we download and install the Add-in feature for Microsoft word, we are encountering the error " The solution cannot be installed because it is singed by a publisher whom you have not yet chosen to trust. If you trust the publisher, add the certificate to the Trusted Publisher list. Kindly let us know on how to get rid of this error.

Content (required):

Once we download and install the Add-in feature for Microsoft word, we are encountering the error " The solution cannot be installed because it is singed by a publisher whom you have not yet chosen to trust. If you trust the publisher, add the certificate to the Trusted Publisher list. Kindly let us know on how to get rid of this error.