Put the summary of the bug you're having here

What I expected to happen was...:
Play Minecraft

What actually happened was...:
Error code 1 because my computer account name contains "é"

Steps to Reproduce:
1. Start Minecraft.
2. Click Play
3. Error code 1

This bug is still here 4 years later, maybe time to actually fix it. https://forum.minecraft-france.fr/threads/crash-minecraft-exit-code-1.49482/

Had to create a new account on my computer, without any "é à ù" etc, and it worked. But please, fix.