5g home internet - some sites won't load

I called T-mobile tech support and told them about the entry above that mentions the applied content filter. The tech talked to a supervisor and then told me they were not aware of any such thing existing. After much searching and reading articles I was convinced it was related to network security or encryption protocol. I attempted to update the driver for my network adapter, but it said it was up to date. However, Windows Update found 4 other updates that were available for my Windows 11 Pro system. One of them was a cumulative update for the dot NET versions. I ran the four updates and rebooted about 3 times during the installs. Then, my connection to all websites started working. If you can connect to Google, Youtube, and other popular websites, but cannot connect to others, like Walmart.com, try updating all your drivers and applying Windows updates. It worked for me. Good luck. 

I have the same problem too. Some websites does not work when I use T-mob 5G but works on ATT Router.

I just got 5G Home Internet and had same issue over ethernet, but WiFi worked fine. So i compared the IP settings of both connections on my Mac. I noticed the ethernet connection was missing the router IP in the DNS settings. Once i added that everything worked.

I started to use Tmobile home internet 15 days ago. It had been working fine until I paid my first payment. Some websites are not loading, even one of my work VPNs cannot be connected to. Nothing wrong about browser, cache, or OS. One of my friends lives few blocks away, he is having the same issue. We tracked down with other ISP’s, NTT said this: It is very interesting that forcing the return path over Telia worked. That effectively removes Sprint<>Tmobile (Telia routes through Zayo->Tmobile) and futher indicates the trouble is somewhere along that Sprint/TMobile LAX handoff. 

I guess it is a Spring<>Tmobile merge issues which they have never really resolved. It works if we re-routed a website to skip Sprint<>Tmobile router.

Tmobile Tech support team is not helping much so far. This is just pushing customers away.

Does anyone from TMobile answer questions on this site? Anyway, I am having the same issue on one site. Everything worked fine for the first month and now I am having problems getting info to load on a site I need for work. It works fine when I use my Verizon  Hotspot. Since this is a work laptop I have limited capability to change things on it. Is there a simple solution to get the site to work?

I am having the same issues, some websites not wanting to load. My friend who has the same service is experiencing the same problems. www.figandcoite.com can ya’ll try to load this website?

I’m having the same issue accessing one website I NEED to use for work from home. When I connect in my workplace, website works perfectly. I may have to switch back to my old provider because of this one site. A shame, because the service works great otherwise. 

I don’t have a solution--just another data point. Everything (including that URL for Judi Glove) works fine on my MacBook, on all three gateway wifi bands (2.4 and both the 5G bands). My MacBook is wifi 6 capable.  

I’m using an M1 MacBook Air, macOS Monterey 12.3, using mostly default network settings. Configure IPV4: Using DHCP. Configure IPV6: Automatically. I did add the Google DNS servers in my network configuration (8.8.8.8 and 8.8.4.4), as J-Mac did, but I always do that very first when setting up new networks, so I don’t know how it would have been with different ones.  I also have the gateway itself (192.168.12.1) in the DNS server list.

Works fine with Safari, Firefox, and Chrome browsers.

I know it doesn’t help solve the problem, but I add that info as another data point. As a retired IT guy (database, security, and network), most of the time when I faced problems connecting to only some (but not all) web sites, it was a DNS issue.

I have the same odd failed page loads on specific sites, so I am monitoring this thread too.  I am a new user and usually service is good and speeds are 200Mbs down, 30Mbs up if not congested.  If I come up with new information then I will post back here.  For now I am using http://judiglova.com/ as a test (it always loads fine on cellular) .

I am not up to filing a tech support case now - maybe later.

I should add that I have the IPv6 configuration on my MAC set to automatic so I do run both IPv4 and IPv6. I am not sure if it is related but it is another datapoint. I am wired to a Thunderbolt adapter via CAT-6 Ethernet cabling so I know the traffic rides the Ethernet connection. Maybe it is related to running a dual stack IPV4 and IPV6. I tend to leave default settings alone. 

Don’t poke the sleeping dog.

If you load Wireshark and take a packet capture of the period of time when you initiate the session to the site you can save the capture and deliver that to T-Mobile support. I am sure they have engineers there that can read packet captures. Installing Wireshark and saving a packet capture is pretty easy.

J-Mac where did you find “DNS settings in System Preferences/Networking to 8.8.8.8 and 8.8.4.4 “ when I log onto the Ethernet connection settings I don’t see that option.  I feel like the problem is something with the IPv6 as someone else said.  When I turn on my VPN everything loads fine, but if I turn the vpn off nothing will load on Safari, Firefox works which is really odd. 

I’m having the exact same issues.  The service worked fine for almost a month and then in the past 4-5 days i’ve been having to reboot the router multiple times per day because of certain websites not loading.  Youtube and netflix will always load, as will google, and yahoo. But my bank website won’t connect, and many others.   I’ve been on the phone with tech support twice for over an hour and keep being told there’s an upgrade being done to a tower in my area. I find this highly suspect since so many others are experiencing the exact same quirks in connectivity.  

I just got the Gray cylinder and neither of the MacBooks I own would see the internet although they were connected to TMo wifi.  I tried again but used a vpn and they worked like a charm.  This made me very confident the issue was DNS. I changed the DNS settings in System Preferences/Networking to 8.8.8.8 and 8.8.4.4 and the MacBooks worked great even without using VPN.  It was a very simple fix.  What is beyond frustrating is I spent 90 minutes on the phone with TMo support trying to fix this problem and they were absolutely clueless.  Actually, beyond clueless.  All they would do is keep having me reset the device.  I truly find it hard to believe they haven't resolved this issue for other Mac users and documented it for the support folks who have to deal with the public.  C’mon T-Mobile, you're better than this.