Thank y'all for your answers and help. I have looked at MCL-14369, it is indicated over there that the solution is to reinstall the launcher. I have tried it before coming here, and it did not work. Maybe my knowledge in IT is too little, I couldn't find an uninstall.exe in the Minecraft folder (couldn't even do the old school way : deleting the folder itself). I ended up re-downloading the launcher, got an option to repair. After clicking it, it reinstall but the issue was still there. I'm sorry if those questions are silly, but I will accept any help. Thank all of you!
Edit : Reading again (probably too long of a day for me) I see it's mentioning a change of DNS. I haven't tried that (no idea how to do it, but Google is my friend). I'll come back to update that comment.
Thank y'all for your answers and help.
I have looked at MCL-14369, it is indicated over there that the solution is to reinstall the launcher.
I have tried it before coming here, and it did not work. Maybe my knowledge in IT is too little, I couldn't find an uninstall.exe in the Minecraft folder (couldn't even do the old school way : deleting the folder itself). I ended up re-downloading the launcher, got an option to repair. After clicking it, it reinstall but the issue was still there. I'm sorry if those questions are silly, but I will accept any help.
Thank all of you!
Edit : Reading again (probably too long of a day for me) I see it's mentioning a change of DNS. I haven't tried that (no idea how to do it, but Google is my friend). I'll come back to update that comment.