Hi, what kind of message are you getting? For example: * "Access Denied" with a reference number * Red screen about phishing or malware ([[How does built-in Phishing and Malware Protection work?]]) * Some other message - please copy/paste it, if possible, or share a screenshot of it as an image attachment (Unfortunately, this site can't receive email replies, so please follow up here on the forum at https://support.mozilla.org/en-US/questions/1495507)