SB8200

Lights keep blinking green and cycling from 1 to all 4 but no internet connection. Tried unplugging. Tried the reset button. 

The literature in the box sent me to this site find the user guide.  I don’t see it anywere.

After an apple security update this morning, neither my iPhone or my MacBook can sign on to the household’s Wi-Fi. I am getting “invalid password” message. My Amazon Alexis is still connected. Do I need to change the passcode/password and how do I do that. I have a SB8200 modem with Linksys router. 

I am attempting to install an Synology NAS on my system. I can see the NAS on my computer, but the NAS unit (DS923+) cant access the internet. It's like the router is blocking it somehow. No problems with accessing the internet on the computer or via wifi. I am not well versed on this NAS stuff so any help would be great.

We have an Arris modem with an Eero Router. Our internet speeds when we are able to get on is fantastic.  We hare constantly having problems with the internet going out.  We had Xfinity out to troubleshoot.  They said on their end everything is working 100% fine.  They said just make sure your software in the modem is up to date.  The Eero is up to date.  Ive been trying to log into the Arris to do the same, and I can’t access it.  The message “check again after 5 minutes invalid login and password”.  I’m fairly capable to trouble shoot this.  I’m just worried about hackers since it’s not a secure site.  Anyone else have this issue?

I have a SB8200 modem that I’m trying to access the MAC filter to add a MAC ID to give my thermostat access to the internet to control the thermostat from my phone.  Honeywell and my internet provider claim they can’t help me.  How do I find access the MAC filtering in my modem?

The power light will briefly turn on and then all other lights will flash together then all lights will go out. The modem will continue to do this every few seconds. Is this a hardware or ISP issue?

Have had SB8200 for a year - has worked perfect until recently, when it drops the connection multiple times per day - and all the front panel lights say everything is fine.  SB8200 in warranty, Arris support checked everything and found all was good with the incoming signal. This was after asking me to have the ISP to send a re-activation signal and monitor for 48 hours (which I did - any experienced more dropouts). But they now want my ISP to come out and install a test modem for 24 hours - at cost $$$ to me, of course.  I don’t know why, we experienced a dropout while on the support call.  Clearly support does not have direction to actually help customers, but rather keep trying to point the finger somewhere else.  Any way to just get a replacement?  

Testing the SB200 when only power and ethernet connected.  Unit reboots after 10 minutes.  Is this normal behavior when no coxial is connected?  This is my second purchased one.  Many thanks.

Ch 2 showing Not locked, all levels look good.Had issues with ISP, replaced the line from the drop and tap, and had to call the fcc to actually have them come out and fix the node, just want to make sure everything looks good. currently the line has 2 splitters, just wondering if the node adjustment could have affected the configuration with my line.

We had a brief power outage to our home over night. When trying to connect to the internet in the morning, we had no connection, or intermittent connections. I rebooted the SP8200 and also did a reset. I contacted our provider, Breezeline, who said there were no outages in the area. They trying to reset the connect from their end twice. The connection would come back briefly and then fail. Finally the provider eventually said that it was the modem, and that I had to contact the manufacturer, Arris, to determine the problem. This is where we stand at the moment.

I have an Arris SB8200 and if I wire my Xbox directly to my modem my router stops receiving internet so I cannot get wifi. I've done a reset and unplugged everything in every combination i can. When I get my router to work as soon as I turn on my Xbox my router disconnects and I have to reboot everything. I cannot get both to work at the same time while connected to the modem. Does anyone have ideas or solutions? I just would prefer to have my Xbox wired to my modem rather than through my router if possible. It does work if I hook it up through the router my connection just isn't as good.

Security search revealed vulnerability due to open port -- how do I close it?

I just purchased an ARRIS SB8200 Surf Board modem and having trouble activating.  To activate, I have two choices….Scan the QR Code or do it manually.  There is no QR Code and when I try manually...it does not recognize my wi-fi password.Is there a way to get the QR Code for the SB8200? 

Need instructions on sb 8200

I just replaced the Xfinity equipment with my own ARRIS SB8200 and a Ubiquity Dream Machine SE router that feeds data lines wired in my home, with 5 end point mesh devices. No problem transitioning all my end use equipment over to one of the 4 networks I set up in the Dream Machine WITH ONE EXCEPTION - SONOS. The more I read, and I am not a techie, I see that there are incompatibility issues between Ubiquity and Sonos, so my desired solution is to connect a conventional wireless router to the second ethernet port on my SB8200, creating a wireless network apart from going through Ubiquity, totally dedicated to Sonos. Will this work? Seems it should if the second ethernet port has the same functionality as the first. Thanks in advance for any help here!

We’ve used this modem for years with no issues like this. The buttons are always green. Today, we stopped getting internet service. The receiving light is blue, and the internet company is sending a tech, which is a huge inconvenience. Do I need to replace the modem? Thanks. 

I'm having connectivity issues. I think there's some storm damage to my came lines. Because of that, I've been logging into my SB8200 often to look at the event log. I've noticed that I can't log in when the send LED is flashing. My PC just says it can't resolve the IP address.Is this normal? I can sign into it once the send LED is solid, but it doesn't make sense to me for the connection to the ISP to have any affect on the ability of my browser to find 192.168.100.1

Surfboard identifies my modem as a Motorola sb 6121 and my modem is an Arris sb8200. If that is wrong how can I trust anything else the app displays? 

My wifi has been offline for 4 days. Xfinity reporter that on their end the internet system is on and successfully connected. They suggested to troubleshoot my surfboard. I rebooted several times - no luck. Should I factory reset? See title for status lights on my modem. 

How is this resolved?  Happens with Win7, Win10 and Win11.  Browsers include Chrome, Firefox, Brave, MS Edge.

Xfinity sent me an email saying that my SB8200 is not able to deliver the upgraded 800 mbps speed that I’m being offered.    Is that true and if so, any recommendations of the best value for money for a modem that DOES full use of the higher speeds? Thanks in advance for your helpJP

We have a new modem (SB8200) and intended to use our existing Netgear router they do not want to talk. Any advice?  Do we have to have an ARRIS router as well?  That does not make sense when my prior modem was not Netgear. 

Hello! I have an SB8200 Surfboard modem that seems to be non functional. I can connect to my wifi but I can't connect to the internet.The light are (top to bottom) Yellow, Blue, Yellow, Yellow, and the rest are offI'm pretty sure my warranty is still active but when I checked online it says it can't find the device. I've double and triple checked the serial number and it's exactly what it says on the modem. Every number. I'd even show the picture if It was safe to share the serial number but I'm not sure. I've tried adding spaces between the letters, I've tried using every other code on the modem even if it isn't labeled as the serial number, I've tried adding S/M: the the beginning of the number, I've tried adding zeros, removing numbers, putting letters in upper or lowercase, nothing has worked. This is the main reason I made this post 

Good morning, Have a brand new SB8200 that's never been opened but I purchased it in 2019 and its just been in storage. Want to replace the current SB6183 I am using with Charter Spectrum. I need to determine the revision or version number to make sure its at minimum version 2 per Charters approved modem list. I have checked on the box and the modem itself but there is no version number listed. Is there a way to determine the version number from the s/n, etc? I am pretty sure it will be fine as the 6183 I have been using has been working fine on the acct since 2014 but just want to be sure.Thanks