If you have ever received in error message which has given you the following code, 0x80040900, it is telling you that you are not able to find a network, or the server name cannot be found. There are several ways to fix this problem, many of which are very simple, and others which may require you to find a professional technician. Regardless of why this occurs, always delete emails that may be suspicious which may be causing the problem and contact some type of support to get the help that you need to fix this problem.