Make a test with the old Launcher - Windows 7/8 version (works with Win 10/11):
Or try another Launcher like MultiMC, AT Launcher or Technic Launcher
Failed to start the game!
Name: REQUEST FAILED
Registration on the website: Unable to prepare resources for download
There are no mods. When reinstalling, it lets you into the game, after restarting the computer, an error pops up when it lets you into the regular version without any problems. What could be the problem?