Subscribe to the Blogipconfig /release ipconfig /renew Once these have completed type exit and press the Enter key to close the Command Window. Using the Correct MTU Some connection issues can be caused if you are using an unsuitable MTU (Maximum Transmission Unit) value. This value determines the size of packets that your network device can send and receive, if a value is too high or too low you may encounter connection problems. Some more detailed information on the MTU parameters are available on Wikipedia1500 = Used in Cable Broadband connection and some Wireless connections (PPPoA) 1492 = Standard ADSL value (PPPoE) 1458 = Troubleshooting value used by some ISPS 1450 = Used by some Network Providers 1400 = Lowest value recommended for a broadband connection You should contact your Internet provider to find out what MTU value they recommend for your connection. Most modern routers will allow you to set the value used in your connection: Instructions on adjusting this you should be available in the manual or from the router manufacturer