This article applies only to Minecraft: Java Edition.
If you try to launch Minecraft and get an error message that begins with Unable to save download, or you see the error org.lwjgl.LWJGL.Exception: Could not create context in your log file, this is commonly caused by an antivirus program or firewall blocking some of the installation files.
Try temporarily disabling your antivirus program and firewall, download Minecraft again and choose ‘repair’ if prompted to do so. Then try logging in again.
Caution Disabling your antivirus program can leave your system vulnerable to malicious activity. If you disable your antivirus program, be sure to activate it again after troubleshooting.
If this does not solve your issue, try uninstalling Minecraft. Once the game is removed, download the game again, and try logging in. Then reinstall or reactivate your antivirus program or firewall.
Did this work? If not contact Minecraft Support.