Network_Failed error in Chrome Web Store usually occurs when users try to download or install an app or extension from Chrome Web Store. Some affected users report that every download from the Web Store ends in an error, while others have the problem only with certain extensions.
In some cases, the problem may also occur with a heavily updated version of Chrome. In the first few months after the launch of Windows 10, the problem persisted for several months. However, a virus infection (most likely adware or a browser hijacker) could also be the cause of this problem. In this case, running a special cleaning tool or scanner, such as Malwarebytes, can solve the problem.