It is extremely important to notice that the printer is not responding error is actually a standard printer error and there are many reasons that can cause this problem. For example, using an outdated printer driver can prevent your printer from working properly. Similarly, if the printer is not connected to a network, this problem can also occur. Below are some simple yet effective troubleshooting steps to help you solve the Canon printer not responding error as easily as possible. canon mx920 printer not responding.