I'm desperate; I joined this forum because I saw the exact same posting as the problem I have: Comodo antivirus keeps prompting me to update my database and when I attempt to, I get the message, 'update failed. Please check internet connection and try again later'. However, I cant find that post now, so I can't check what the answer was. There's nothing wrong with my internet connection - can anyone suggest a solution? I'm getting nervous because something similar happened years ago, I was never able to update, then a virus got into my computer and I had to replace the entire hard drive.