Can't sign in - Minecraft?

Suddenly I can no longer log into my Mojang account online and in the Minecraft Launcher. My password is always wrong. But I'm actually sure that the password was correct. Then I still reset it online on the minecraft.net page (i.e. The password). They then wrote an email to my email address, there I clicked on the link and there I created a new password. But I can't log in with the new password either… The Minecraft Launcher says the password would be wrong and on the website I can't click the Log In button after I've entered my password and email…

Can anyone help me?

Try closing Minecraft and all other programs in the task manager. You may also want to restart your PC. Then try again with the login and make sure that the password is really correct! If it still doesn't work, you should contact Minecraft Support. They can then help you quickly

I have just logged in to the 2nd operating system (Ubuntu) on my PC… I can log in there without any problems… I will now try again from Windows

Please check these things before trying again:

Is your caps lock key turned off?
Did you enter your Mojang password?
Do you really have a Mojang account or do you have a Microsoft account?
Is your email address spelled correctly and is it also the right one?

If you have checked all of this and it still does not work, please contact Minecraft Support:

https://help.minecraft.net/hc/en-us

I can log on to my 2nd operating system. I restarted the computer and uninstalled Minecraft completely (not only the launcher but the whole .minecraft folder) but it still says "Wrong password". And on my 2nd operating system (Ubuntu) I can log in normally all the time…

Yes, I've had that before, that's a bit stupid.

Neither did you ever have a program on it to get a free Minecraft Acc. To get or you have in your car. If there are no special characters in it, just press Forgot PW and use a PW with special characters as the new PW.

https://help.minecraft.net/hc/en-us.