Setup Router logo in white Setup router name logo in white
Get Software

How to Reset the Cisco DPC3941B

Thumbnail image of Setup Router Staff
Setup Router Staff
(Last Updated: ) | Reading Time: 4 minutes

With this guide I will show you how to reset the Cisco DPC3941B router back to factory defaults. It's important to know the difference between a reset and reboot. When you reboot you cycle the power to the device. When you reset the router you take all the settings and return them all to how they were originally from the factory.

Warning: This reset has a lot of consequences to it. Please consider the following before you decide to reset the Cisco DPC3941B router:

  • The router's main username and password are reverted to factory settings.
  • The ISP username and password are erased. If you use a DSL router you need to re-enter these values. Call your local Internet Service Provider for this information.
  • The Internet name and password are reverted to factory settings.
  • If you have made any other changes to your router you need to reconfigure them after the reset is complete.

Other Cisco DPC3941B Guides

This is the reset router guide for the Cisco DPC3941B v303r2042173-151003a-CMCST Comcast. We also have the following guides for the same router:

Reset the Cisco DPC3941B

Use a VPN Instead

Have you considered using a VPN instead of forwarding a port? For most users, a VPN is a much simpler and more secure choice than forwarding a port.

We use and recommend NordVPN because not only is it the fastest VPN, it includes a new feature called Meshnet that makes forwarding a port no longer necessary for most applications. With NordVPN Meshnet, you can connect to your devices from anywhere in the world, completely secure, over a highly encrypted VPN tunnel.

When shopping for a VPN, make sure that they meet the following criteria:

  • Your VPN provider should have a no-logs policy. This means that they do not keep any logs of any kind.
  • Make sure that your VPN provider has lots of exit nodes all around the world.
  • Check that your VPN will not affect your speed.
  • Verify that your VPN provider uses WireGuard as the underlying protocol.
  • Many people prefer a VPN provider that is not based in the United States.

This is the list of requirements that we used when we were shopping around for a VPN provider. There are lots of free, shady VPN providers out there that we looked at and dismissed.

Based in Panama, using diskless servers, and with over 6,100 servers in 61 countries, we can safely say that NordVPN satisfies all of these requirements.

NordVPN is the fastest VPN!

Once you've set up your NordVPN account on multiple computers and enabled Meshnet, you can seamlessly access all of your devices as if they were on the same network. You don't even have to log in to your router. It's very simple.

Every time you click on one of our affiliate links, such as NordVPN, we get a little kickback for introducing you to the service. Think of us as your VPN wingman.

Okay, now that you've determined a reset is right for you, you need to find the reset button. We have circled it in the image below for reference.

router reset factory settings
This is the reset page from your Cisco DPC3941B router.

Take the end of an unwound paperclip and press down on the reset button for about 10 seconds. If you don't hold this button down for long enough you may only reboot the router instead of the desired reset.

Please be aware that this is going to erase every personal setting you have ever changed. If you want to try and avoid re-configuring the router afterwards you should try other troubleshooting methods first.

Login to the Cisco DPC3941B

After the reset process is complete you need to login to the Cisco DPC3941B router using the appropriate default values. These can be found in our Cisco DPC3941B Login Guide.

Change Your Password

Next you need to change the password you just used to access the router setup pages. These default passwords are very easy to guess which make them terrible passwords. If you need help coming up with an original password check out our guide titled Choosing a Strong Password.

Tip: If this router is in your home, write this new password down on a sticky note and attach it to the underside of the device.

Setup WiFi on the Cisco DPC3941B

It's also important to check on your WiFi settings. The network name, the Internet password, and the security method should be checked. For the strongest security method on a wireless router choose WPA2 along with a strong password. If you need help with this check on our How to Setup WiFi on the Cisco DPC3941B.

Don't forget to sign up for NordVPN's promo deal before it's gone.

NordVPN is the fastest VPN deal!

You might notice that most of our site doesn't have ads on it. This is because we use partnerships with companies like NordVPN to keep the site running. Thank you for supporting us by using our referral links.

Cisco DPC3941B Help

Be sure to check out our other Cisco DPC3941B info that you might be interested in.

This is the reset router guide for the Cisco DPC3941B v303r2042173-151003a-CMCST Comcast. We also have the following guides for the same router: