I understand that this problem may be the cause of the original error that I have, since I bought a realms through the Mojang page, but when I try to enter this it gives me a Sockets error, as I understand it is because the internet speed is Low, which makes sense in conjunction with the application download problem, which is evident.

I did a lot of speed tests even trying to enter the realms, and it always tells me that I have good speed, but the error keeps giving me whenever I enter the server. I even did tests while the launcher is downloading, and again I have no speed issues.

Attached image Speed.png, at that time the download of the launcher was less than 10kb, and as you can see the speed test, at that time it had more than 200 megabytes of download.

In the image Socket.png, you can see the error that it gives me at all times when I enter the Realms, again I did tests and I have no internet problems, and the application is authorized in the Firewall, so this is not what it generates the problem for me.

Completely remove Java and Minecraft from the PC, now I am only installing Minecraft, as soon as I have a new connection test to the realms attached, but because of the speed problem I see in the launcher, assume that I will have the same error again .
The problem here is that I only have a failure with the Realms, if I try to connect to another server I have no socket error, and the Realms is Payment, precisely because the idea is that it works correctly with minecraft, and it is payment.