Since tonight I can no longer log in to a minecraft account
Congratulate
Okay and what's the question?
First of all, make sure that you have also entered your email address and password correctly.
If you are not sure, you have probably forgotten the password. In this case there's a button under the field where you have to enter the password that says "Forgot your password?". This allows you to request a new password, which will be sent to you via email.
Another possibility would of course be that your account was hacked. You can also try to reset the password and otherwise contact Mojang support on miencraft.net.
If you have been doing unattractive things with Minecraft lately (e.g. Den mcleaks authentificator), it may be that Mojang has blocked your launcher. You can find tutorials on the Internet.
If anyone can help me because I can't log in to the launcher or on the site
So the data is 100% correct, I tried 4 accounts, none of which work on the page or in the launcher.
That with the locked launcher, but I can't assume that I once installed a client or?
I can log in on the Mojang site
Thank you mate
If so, I would recommend that you put all your worlds and important data on a USB stick or in a backup folder and completely reinstall Minecraft.
In my experience, the fact that you once installed a client could lead to the launcher being locked. As mentioned above, this happened to me with the mcleaks authentificator. However, it was around 2 years ago, so I can't help you on this point.
Okay, I'll give it a try
Nah, I just reinstalled the launcher. I still can't log in to an account.
Could that be the login server or something down?
I'm fine, just tried it. Probably my knowledge ends here, that looks like a problem for the Mojang support
Yes, I will now restart my router and if it still does not help, I will write to the supoort.
However thank you for your help.