Sometimes, when I try to play Minecraft on my old Windows 7 computer using the new launcher, the game doesn't launch until I manually end the MinecraftLauncher task using Task Manager. There are times when the launcher process successfully ends itself and the game can start, but on most occasions, I have to close it myself to launch the game.
Linked issues
Comments

Thank you for your report!
However, this issue is a Duplicate of *MCL-5569 *.
It has been linked to this report. If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki