When trying to activate PCReviver from Reviversoft the AVG traps it and sends it to quarantine

Hello John,
Sorry to hear that. Please disable AVG Internet Security unlimited as mentioned in this article ( http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode ) and install PCReviver application. Report the false detection of AVG at https://www.avg.com/submit-sample and our developers will work on it.
Thank you.

Please can you advise on how to prevent AVG detecting the PCReviver product as a Threat and sending it to quarantine?

Hello John,
Sorry to hear that. Please disable AVG Internet Security unlimited as mentioned in this article ( http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode ) and install PCReviver application. Report the false detection of AVG at https://www.avg.com/submit-sample and our developers will work on it.
Thank you.