This article covers how to reset the Sagemcom Fast 5866T router back to factory default settings. This is a much bigger deal than a router reboot. Every time your router loses power it reboots. This is very different from a reset, which erases a router completely and returns it to factory default settings.
Warning: Since this erases everything you have done to the router, there are some things you need to consider first. When you reset your router, the following will happen.
- The router's username and password are reset.
- All WiFi information such as network name, password, and authentication method are erased.
- Your ISP settings are reset, which means you will have to contact your ISP to get them back.
- Any firewall settings, parental controls, and port forwards that you have configured will be removed.
Since a router reset is such a drastic step, it should only be done as a last resort when you cannot recover your router's password using any other methods. You should be sure that you have tried to at least recover your router password using our Router Password Finder before resorting to a router reset.
Other Sagemcom Fast 5866T Guides
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.
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.
This is the reset router guide for the Sagemcom Fast 5866T SGJy100172. We also have the following guides for the same router:
Recover Password in Sagemcom Fast 5866T
If you are resetting your router because you forgot your router password, then you should try running our Router Password Finder first.
Router Password Finder is designed from the ground up to help you recover your forgotten router username and password, which can save you a lot of time.
Router Password Finder - Lost or Forgotten Router Password Recovery Tool
A router reset should be the last thing you try if you are unable to login.
Reset the Sagemcom Fast 5866T
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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.
Usually there is a reset button located on the back or bottom of a router. Most reset buttons look like this:
Yours may look slightly different, but they are usually tiny. You might find a pinhole on the back of the router that requires a paper clip to push the button hidden under it.
Hold the reset button down for 10 seconds and watch the lights. You should notice that the blinking pattern of the lights on the front of the router changes after a few seconds. It is harmless to hold the reset button too long.
Remember, this will totally reset your Sagemcom Fast 5866T router.
Only do this once you have exhausted all other troubleshooting options, such as running our Router Password Finder software, which can recover a lost router password for you.
Login to the Sagemcom Fast 5866T
Now that you have finished resetting your router, you need to log in using the default username and password from the factory. Just follow our Fast 5866T Login Guide to find all of the information that you need.
Change Your Password
Do not forget to change your router's default password when you log back into it. It is a huge security risk to leave your router's password set to the factory default. If you need help coming up with a strong password, check out our Choosing a Strong Password guide.
Tip: A great place to write your new password down is on a piece of paper taped to the bottom of your router.
Other Sagemcom Fast 5866T Guides
This isn't our only Sagemcom Fast 5866T guide. We also have the following guides for this router.
This is the reset router guide for the Sagemcom Fast 5866T SGJy100172. We also have the following guides for the same router: