How to Fix Cisco Router Not Working Cisco router is one of the leading router brands. Several users are using the Cisco router service and are very happy with the speed and reliability. But the problem starts when your Cisco router stops working. There can be multiple reasons for Cisco router not working. Effective guide to fix if the cisco router is not working properly Common Cisco Router Technical Issues Users cannot change the password of the Cisco router. Cisco router connectivity issue The speed of the router is slow. Cisco router configuration problems. The problem of Cisco password recovery and configuration. Cisco switch installation and configuration issue Cisco router misconfiguration issue Unable to fix Cisco router not working issue. Weak flag issue Can't reset the router Network problem