ContributionsMost RecentMost LikesSolutionsRe: Can't seem to self activate a Cox certified modem MB8600... Bruce thanks for the reply, the modem is up and running! A bit of "back-and-forth" emails.😰It wasn't too bad though. T_Nic Re: Can't seem to self activate a Cox certified modem MB8600... Carol, the new modem is up and running! Thanks for the help on this!👍☺ T_Nic Can't seem to self activate a Cox certified modem MB8600... I recently received an email from cox telling me that my cable modem is old and outdated. So, I purchased a new modem from amazon (MB8600) that was on the certified list. I assumed it would self activate, but there seems to be a problem with the self registration process? I noticed that others got help throughcox.help@cox.com email with this problem, should I do that with modem info? Thanks, T_Nic Solved