Dear Technical Support： I can't open any html that I've downloaded from my email account. In the last two month I haven't changed any settings， beside I’ve scanned my PC for malware，there isn't any. After opening the html attachment a new window opened in the Firefox browser where on the address line appears "file:///C:/Users/B/Desktop/Attachment%281%29.html". Very odd is, that for the first time this address beginns with "file:///" I don't know why ? Please help me to solve this problem. Thanks in advance for helping me. Kind regards,