I just started having this problem on 1.16.40 . I am leaving feed back on how I resolved it and what caused it.
This issues started with Minecraft on a Nintendo switch changing the skin to something that was no on my purchased list. When loading on windows 10 computer the profile would never load.
I resolved the issues by changing the skin on the Nintendo switch to something I owned on both devices. This allowed the profile to load and then change on the computer to my desired skin. The preview function for skins on the console edition caused the problem. I hope this helps others.
Redisturbed
I just started having this problem on 1.16.40 . I am leaving feed back on how I resolved it and what caused it.
This issues started with Minecraft on a Nintendo switch changing the skin to something that was no on my purchased list. When loading on windows 10 computer the profile would never load.
I resolved the issues by changing the skin on the Nintendo switch to something I owned on both devices. This allowed the profile to load and then change on the computer to my desired skin. The preview function for skins on the console edition caused the problem. I hope this helps others.