How to Resolve Bitdefender Update Error 1011? Bitdefender is the world’s one of the most used and trusted software when it comes to the security of one’s devices, especially PCs and laptops. It comprises the latest technology and keeps on incorporating new features into its software to give the best of products to their customers. However, some problems have been noticed in Bitdefender. The update error named 1011 occurs when you are downloading the Bitdefender file and it can be caused by many factors but the update server being offline is the primary source. Although there is no need to panic as it can be cured easily, all you have to do is follow the steps given by us.
Go into the admin mode and then open the command prompt, followed by entering “Ping IP_updateserver 7074”. Now the port must be open to receive updates. So you have to make sure that it’s open. To open the port you have to enter the command “telnet IP_updateserver 7074”.