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We’ve become so used to enjoying fast and reliable Optimum internet connection at our fingertips that even a few seconds' delay can be frustrating. When an image takes a bit longer to load or a site doesn’t load, we feel irritated. When cable TV pauses and streaming stops, it gets extremely frustrating. Even worst is when your screen displays an error message, and you find yourself stuck with a code that is too hard to decipher. After all, Optimum error codes hold little meaning for most users, and for those who are not tech-savvy, it can be pretty overwhelming.

This raises the question: what can Optimum subscribers do to fix these? Well, most Optimum error codes have quick and easy fixes, but some may get out of your hands. But, not to worry, we'll explain.

Optimum Error Codes

Optimum has lots of different error codes with accompanying messages that are not clear to most users. While some are pretty straightforward, others do not clearly indicate the problem you may be facing. These error codes are usually a result of hardware issues, streaming devices, system-wide glitches, and poor connectivity.

There is a whole list of frequent error codes that Optimum customers may encounter at least once during their service period. Each of these codes represents something in particular. By learning what they indicate, you can resolve the issue instantly without any hassle.  So, let’s get started!

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Error 200: Physical Network Connection Failure

This error means that your physical network connection — the cable that connects your modem to the internet — has failed.


Error 200 usually occurs due to poor cable connections, such as loosely connected or damaged modem wires.


First, closely examine the cables/wires attached to your modem to check for any possible causes. If cables/wires are frayed or damaged, fix them.

If the issue still persists, then you need to get cables/wires replaced. For this, buy a new coaxial cable and replace the old, damaged one. If even doing that doesn’t help, reach out to Optimum Customer Support for guidance to troubleshoot connection issues.

OBV-005: Cable Box Unable to Receive Internet Signals

This is the “no proper internet connection in the particular cable box you are using” status.


OBV-005 is a connection error, which occurs when your cable box cannot connect to the network. While this sounds terrible, it is usually just a WPS issue.


When you see this code, the first thing you should do is check if the cable box is plugged into the correct port on the router. Make sure that you turn off the cable box completely before plugging it in again.

If the WPS issue seems like the culprit, then reboot your boxes. Here’s how you can do this:

  • With the modem/router powered on, press and hold the reset/WPS button for 5 seconds
  • Release it and wait for your device to restore to its default settings
  • If you have multiple boxes, reset all of them as well
  • On the main box, hold the WPS button for 5 seconds
  • Watch your boxes pair up again

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NW-1-19: Netflix Network Connection Problem

This one is best known as the Netflix error code that indicates your connection to the internet has been lost.


NW-1-19 error code occurs when there’s a problem with your network connection. The culprit may be your internet connection or the device that you are using to connect to the Netflix service. This is preventing your device from accessing Netflix servers.


Here is a list of things you can do to fix this error:

  1. Restart your devices — Smart TV or Streaming Media Player — to remove the current state of its software and app. And sweep away any activity that is causing the Netflix app to misbehave
  2. Restart your modem and router. Simply remove the power from your home networking equipment, wait for 30 to 60 seconds, and then plug everything back in.
  3. Check your internet connection. Use any other internet-enabled device. If that device can connect to your network, then your internet connection is fine. If that’s not the case, you may want to check with your ISP for service-related issues.

Optimum Err-23: Altice Box Unable to Receive Reception

One of the most common errors you see is Err-23, which means your Altice box is not receiving signals from the mainline.


This error can be due to a large number of reasons, like out-of-date drivers or loose cables. So you need to troubleshoot it quite thoroughly.


The first thing you should do is flip your device over and make sure all of its wires are connected properly. Also, check if all the wires and connections are in the right ports.

If that doesn’t work, check all of your other connected devices. If none of them is working, the problem is from your ISP’s end. In that case, reach out to Optimum customer service and call them at 844-520-8978 to explain your issue thoroughly.

Error Code 106: Unavailable Server/ Slow Internet Speeds

Although common, error code 106 can be a little complicated to figure out. This is because it can occur due to various possible reasons.


This error usually occurs when the server you’re trying to connect to is unavailable. Or the internet speeds you are getting are too slow.


Wait until the server traffic eases up and you can access it. After that, try to connect again to see if it works.

Check your internet performance by either taking a speed test or connecting it to other internet-enabled devices. If it is not up to the mark, try moving your devices closer to your router/gateway, so that they can get the best possible signals. Plus, make sure there is no obstacle, like metal objects, brick walls, electronic equipment, etc. blocking your router or gateway. This way, you can make sure there are no signal interruptions taking place.

Error Code OBV-55: No Proper Connection to the Network

You'll likely see the message if you are using the Optimum cable modem and Altice router. It usually means there’s no stable connection to the set network.


This error can occur due to several reasons, like software bugs, faulty cable connections, and more. So, it is hard to say for sure what exactly is causing it.


First, make sure your device is getting a stable internet connection. Double-check it by connecting other internet-enabled devices to the same network. If you don’t find any connectivity issue, then your internet service provider is definitely not to be blamed.

Next, check all the cable connections on your devices, and make sure they’re all connected properly. If you have any extra cables attached to your router or modem, remove them. This should work!

If that still doesn’t fix the issue, the final step is to restart your whole network. The trick is to keep it powered off for at least 15 minutes before starting it up again for a smooth reboot.

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There You Are!

We hope this article helps you resolve any and all annoying Optimum error codes. The formula is simple with most of these — check your internet performance, tighten all your cable connections, or restart all your devices. 

That said, Optimum takes its subscribers seriously, which is why all Optimum services are designed to suit the diverse needs of customers. The provider strives to ensure its users get the best quality service no matter what kind of problem comes your way, Optimum customer service staff is always ready to help.

Dial Optimum phone number i.e. 1-844-520-8978 to speak to a professional. For services in Spanish, call 1-844-527-5633. Rest assured, you will always find Optimum Customer Service at its best!

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James Chadwick

James Chadwick has proved himself to be a great help to the residents of Hawaii in their search for the best internet services. His expertise in writing along with his knowledge of the provider has resulted to become a marvelous combination of detailed insights. He has an eagerness to troubleshoot tech-related problems, as well as enjoys writing detailed how-to guides for Hawaiian Tel subscribers. He also has experience working closely with providers like DIRECTV, AT&T, and Spectrum. James works closely with a team of excellent content writers to help generate the most valuable content for our readers.