Unable to find a certificate file when installing Roxio software You will need to uninstall any previous versions of the software and then perform a clean installation. Please search our knowledgebase if you need help to uninstall our software. Have more questions? Submit a request 2 Comments Date Votes 0 Michael C Brown March 11, 2016 02:36 I re install it 2 times still no certificate or its crrupted 0 Marilyn Parker January 21, 2017 21:06 Same here. Useless. Very disappointing as I love using the Roxio but now have to use the inferior media suite which came with the PC Please sign in to leave a comment.