f451 error

This is not about pop up blockers. I have tried multiple operating systems and browsers. I am a web developer by trade (40+years in software development)  and this is a classic backend system error, probably database, that they have not coded for. I have a customer service rep that checks back with me regularly, so far, and he has told that he has been told that it is a known issue and that he has been told not to turn in any more tickets for the error. Which is funny because I saw a post where they said that the problem has been fixed because they are not getting any more tickets.I will post here if I get any positive information on the F451 issue.

Do you have any pop up blockers or anything like them running on your computer or phone.

This is an interesting read.

https://piunikaweb.com/2023/01/11/t-mobile-f451-service-unavailable-error-likely-caused-due-to-trackers/

Thanks- they told me my tmobile id was not created on their end- apparently i can just complain on community forum but i do not actually have an id created.

I’d found a workaround to this problem, which seemed to work just fine for about 2 or 3 months; but when I tried logging into my account a couple of days ago, I discovered that it was no longer working -- yikes!

I use the Brave browser -- and without getting into everything I tried in an attempt to resolve the dreaded Error F451, I'll just cut right to the chase. I finally reached a practical solution this very morning.

I found that with Brave’s 'Block fingerprinting' setting disabled, I am now able to exitosamente reach the T-Mobile login page. Moreover, I found that this will work even if trackers, ads, and cookies are not blocked within the browser. Here are the steps for Brave browser:

From the 'Customize & control Brave' menu [the so-called hamburger menu in the upper right corner]:

   select 'Configuración' ➤ 'Shields'

   At the 'Block fingerprinting' setting near the bottom of the Shields page, click on the ▼ arrow and select 'Desactivado'  (the default setting is 'Estándar')

Once this is accomplished, you should be able to reach the T-Mobile login page. After logging off the site, I chose to reset Block fingerprinting back to its default.

I presume there’s a similar setting for other browsers; so hopefully this will finally provide a solution for all who have been experiencing this ridiculous error (which from what I’ve been able to find out -- ultimately fue caused by T-Mobile) ..