Working in Dell PC with Windows 11 pro, YouTube and Gmail work, other websites including T-Mobile.com will not load. Spent two hours on line with tech support. Progressively more technical. For the final solution is they don't know and call Dell. This computer is wired to T-Mobile box not using wifi. Wifi works on phone and tv. I find it funny that it won't load their own site. Kinda tells me it is incompetence and not malicious. 

Any head way on this topic? I have 2 laptops that have the exact same issue as has been described in this thread. I can use both normally on any other network, but T-Mo sites are not loading (see previous error). I can hotspot from my phone to T-Mo and then connect my laptop to my phone and all sites work…. Grrrr!

Same issue here. If I use my mobile hotspot, I am able to load anything. If I use my 5G home internet, I cannot load websites that I use for work. I am running through a VPN. Example website is datadashboard.fda.gov. My IT guy says it appears that it’s any site that requires location. I can access these websites through my iPad but not my work laptop that is connected to the VPN. This makes me think it’s got to be a setting on my laptop.

I can connect to same websites on other internets. Hotels are fine, even taco bell internet is fine so this make me think it’s the internet.

I work from home and live remote so getting good internet speeds it HARD. I have great speeds with TM so I really do not want to switch again.

EDIT: I just reset my router via the T-mobile T Life app and now everything is working as it should.

I had this problem immediately upon activating my T-Mobile Home Internet Gateway, G4SE-1. I could not access my company’s website or e-mail servers when connected to the Home Internet Gateway, but I could connect to the domain using a cell signal on my phone or when using a VPN on my computer. I tried restarting the router with no change. My T Life app does not have a reset button, so I used a sim removal tool to push the reset button on the back of the gateway for five seconds to reset it. After the reset, it updated firmware and I had to set it up again, but now it is allowing me to access my company’s website. Very odd. I hope it doesn’t happen again. 

Update, it has been six days since I reset my home internet gateway, and again, I can no longer access my company’s website or e-mail servers. I called tech support and they had me unplug the gateway for 5 minutes and restart it. After rebooting I can access my company’s website. Not sure I want to deal with having to reboot the gateway weekly to get it to work.

I also have the same problem with T-Mobiel 5G,  Tried to access “https://passportstatus.state.gov/” and it wont load, but it load on other ISP, also noticed that it wont load on Tello or T-Mobile Cell service either.  had the service for 24 hours and ran into this issue. had to call T-Mobile and cancel it because if one site doesn’t work, what else doesn’t work that I don’t know?!!    I was willing to keep it and was excited about the service and new service but unfortunately canceled it.

What it turned out to be for us - T-Mobile is IPv6 only. Where my wife worked - they were IPv4 only. Can’t believe some places are still IPv4 only since IPv6 has been around for over a decade. My wife no longer works for the company and we have gone back to T-mobile 5g internet and everything has been working well. 

From this thread - it appears perhaps many places haven’t upgraded their technology in a timely fashion?

I have done Trace Route from T-Mobile to “https://passportstatus.state.gov/” and it doesn’ Leave the router, last hop is the router but it resolved the DNS.  if I do it from other internet connection, it travel through internet and different hop and it will get there. not with T-Mobile

I even went to the store to return my equipment, sales person tried it from his T-Mobile Phone or store WiFi and didn’t work either, but once tried it from other Internet providers, it worked without any issue. is amazing that T-Mobile hasn’t fix this issue.

T-mobile is IPv6 only.  I am guessing that the government site is IPv4 only.  Nothing T-Mobile can do to fix the issue.  They are not going to add old IPv4 to there network.

Well that might be true, Gov. website might Ipv4 but why is working from other providers?  only issue is with T-Mobile !!!  I have to say, I loved it and wanted to keep it but I have no control over which site is Ipv4 or IPv6. I just want to use it!!!  so they should backwards compatible and fix it for all browsing,  If One Site doesn’t work. then what else not going to work???

IPv4 may be one issue, but it is not the only issue preventing users from going to a domain. As I mentioned in my earlier posts, after initially resetting the gateway, I could connect to my company’s website and e-mail servers. A week later, my company’s website and e-mail servers stopped working from the T-mobile gateway but worked using T-mobile 5G on my phone. After unplugging the gateway for 5 minutes and restarting it, my company’s website and e-mail servers could be accessed again from the gateway. T-mobile seems to be blocking some domains using the wireless gateway, but I don’t understand the erratic nature of the domains working after a reset or restart of the wireless gateway.

My wife’s connection to where she worked was vary sporadic.  Sometimes things worked and sometimes they didn’t. Some things worked - some things didn’t. The company my wife was working for said it was because they are IPv4 only and T-Mobile is IPv6 only.  

This is a big issue that T-Mobile has to address. resetting the device is not a solution. they need to fix it before they can go prime time… this very annoying to the user.

I’m in IT myself and this can’t solution. i think they have major Routing issue within their network too. 

Had the same issue with a brand-new laptop! I was able to access some websites, but not others. Amazon worked, Ebay did not. 

I did the following steps, saw my TMUS network name pop up.

1. go to network connections
2. right click on the TMUS wireless. go to your wireless properties, click on configure.
3. go to advanced tab. click disable on the 2.4 Gz value.
4. select the 5G wireless.
5. I finally saw my TMUS name. 

This fix was short lived. After a while it went back to not connecting to certain websites and Microsoft store :-(

I had the same problem again this week, couldn’t connect to my company’s website or the University of Utah’s website. I rebooted the T-mobile home internet gateway and they both worked. I’m not going to be a T-mobile home internet customer long at this rate.

If the software for that router will let you change the DNS resolution use Google or Cloud Flare. It might be a DNS issue. Try setting the DNS resolution on your client first. Don’t allow the client to obtain DNS from your router. I use a set DNS resolution on clients at times as such. I run MacOS and Linux primarily and only have a single MS10 client for my wife. If it is a Windows 11 thing well I have moved on and ignore Microsoft now. Not going there. I have no such issue with my clients but I also have the original Nokia gateway router and it works great for us. It might be a software issue with the gateway router. 

That might be a DNS resolution issue and stale cached data issues. With out packet captures and analysis it is just a guess. I hope this helps. 

Here is what I learned messing with this almost all day. 

1. When I unchecked the Internet Protocol Version 4 (TCP/IPv4) and then hit OK, under the Wi-Fi went from ‘Unidentified network’ to my ‘actual wireless network name’. But when I did this, and then connected back to my hotspot, I was not able to connect to a website. When I went to the Configure, checked on Protocol Version 4, hit okay, I was able to go to the website. 

This is some frustrating mess. All my other devices work fine. I get this new Lenovo laptop and can’t even get on all necessary websites. 

I don’t think, people should turn off IP v4 or V6 or make any changes  for using the network, it should just work out of the box for all website not just some.

People should post links that they have problem accessing so T-Mobile can look into the issue, I bought one and I had to return it because I wasn’t able to access certain websites over T-mobile network, they were not even accessible over T-Mobile Cellphone plan either.

those links were not bad links, they were Gov. websites. for example one was  “https://passportstatus.state.gov/”

Anyone from T-Mobile monitoring this thread or they don’t even care?!!

I don’t think is DNS issue, I have programed and used multiple DNS servers to overwrite theirs and that didn’t work either.   I think is more routing issue within T-Mobile Network.

Used my own router and used different DNS and that didn’t resolved the issue either. is most likely a routing issue withing T-Mobile.  even their Cellphone’s also having issue accessing some sites.

That could well be true that it is a routing issue. If there are asynchronous paths or routers with issues that could be. The DNS is/was just a suggestion to try to rule it out. It might be the gateway itself. Packet capture analysis would possibly lead to a better understanding of the actual problem. The IPv4 traffic is translated through the T-Mobile IPv6 network and some traffic relies on IPv6 so running dual stack is fine and I would contend important. Mobile service providers run IPv6 to leverage its capabilities. IPv4/6 trace routes, if allowed would e beneficial. T-mobile would need to investigate the routing. With out data it is just speculation. 

I haven’t seen the issues in our area but the T-mobile network has many routes and is large. With the recent storm damage and outages in the southeast it might be a factor. 

T-Mobile home Internet on Lenovo IdeaPad Slim 5 16IRL8 running up to date Windows 11.

I've had my TMO-G4AR for a couple weeks with a similar problem. I can get to "normal" internet websites but nothing that requires higher security.

YouTube, Gmail, and others are fine but I can't log into my bank account, credit card accounts, etc.

Also, I can't log into my Microsoft 365 apps on my laptop like OneDrive, Phone Link, etc.

Talked to T-Mobile tech support and they said it's something wrong with my Lenovo, talked to Lenovo tech support and they said it's something wrong with T-Mobile.

Phone, all streaming services appear to work as normal. None of these problems happen on any other wifi network I use.

I agree. A new device should work fine, no changes, if it is connected to T Mobile network.