So I annoyingly had to upgrade my OS to big sur and when I did that the Minecraft launcher began to let me sign into my Microsoft account again. I presume mojang forgot to make compatibility with older mac OS meaning it will probably be a minute until this problem is fixed maybe.
I am having the issue but I am on mac.
I logged out of the microsoft account and now it refuses to let me login into any Microsoft account stating a error has occurred. This was what previously prevented me from logging in the first place and now I can access any microsoft account. Please fix the launcher.
once this is patched I might make my OS the old one again the new one takes so much memory. MOJANG CLEAN IT UP!