It is highly important for a user to have their McAfee antivirus updated with the latest patches delivered by McAfee. However, updating an antivirus might become difficult in the absence of internet connectivity. Although a constant connection to the internet is recommended for keeping McAfee updated, such updates can also be done offline without internet accessibility. This is possible if users manually update the DAT file of their antivirus through an offline installer. You. Can dial the Mcafee Contact number to have a professional guide you through the process of updating McAfee offline.