Step 1 – Check your Cable Modem

Since there are many different cable modems you can use to access Mediacom Online, it is best to refer to the instruction manual provided with your cable modem for detailed operating and troubleshooting instructions. Below are some basic checks that can be performed on your modem.
1. Check to see if the coaxial cable running from the wall to your cable model is firmly connected at both ends
2. Ensure that one end of the network cable is firmly connected to the back of the cable modem and the other end of the cable is firmly connected to a built-in Ethernet port on your PC
3. If you are using a USB modem, ensure that one end of the USB cable is firmly connected to the back of the cable modem, and the other end of the USB cable is firmly connected to you’re a USB jack on your PC
4. Check lights on modem to ensure connectivity
5. Reboot modem
6. Restart your PC
7. Double click on the Internet Explorer icon located on your desktop
8. Do you have Internet access?
a. Yes, You are done! Welcome to Mediacom Online
b. No, Continue to Step 2


Step 2 – Check Windows Network Settings

1. Ensure you log in as Administrator before proceeding.
2. Click Start, select Settings, click Network and Dial-Up connections (the Network and Dial-up connections window appears)
3. Double-click the Local Area Network Connection (the Local Area Connection Properties dialog box appears)
4. Ensure that the Client for Microsoft Networks and Internet Protocol (TCP/IP) items appear in this dialog box. If either one is missing, click the Install button and manually install these items:
a. Ensure that File and Printer Sharing for Microsoft Networks is DISABLED.
b. Select Internet Protocol TCP/IP
c. Click the Properties button (the Internet Protocol TCP/IP properties dialog box appears)
5. From the Internet Protocol (TCP/IP) Properties dialog box:
a. Ensure that ‘Obtain an IP address automatically’ is selected
b. Ensure that ‘Obtain DNS server address automatically’ is selected
c. Click the Advanced button (the advanced TCP/IP settings dialog box appears)
6. From the Advanced TCP/IP Settings dialog box:
a. Click the WINS tab
b. Ensure that Disable NetBIOS over TCP/IP is checked
c. Click OK to close the Advanced TCP/IP Settings dialog box (the Internet Protocol (TCP/IP) dialog box reappears)
7. Click OK to close this dialog box (the Local Area Connection Properties dialog box reappears)
8. Click OK to close the dialog box
9. Restart your computer
10. Attempt to launch your browser. If no Web page appears, please proceed to step 11.
11. Click the Start button, select Accessories, and click Command Prompt (the Command Prompt window appears)
12. From the Command Prompt window:
a. Input the following text: ipconfig /release and press Enter (this will release your network settings)
b. Input the following text: ipcon-fig /renew and press Enter (This will supply your computer with fresh network settings)
c. If no network settings reappear, click the Release-All button again, then click the Renew All button again
d. Repeat this process until network settings appear within the dialog box. Once you receive new network set-tings, your connection to Mediacom Online has been fixed
e. Close the Command Prompt window.
13. If after a series of 4 or 5 Release All, Renew All Attempts, no network settings appear, there may be a problem with the Mediacom Online Server.
14. Please view the announcement section on the customer support homepage for any known outages.