VirtualBox does not work after upgrading to Big Sur
Big Sur user here (11.1), running VirtualBox 6.1.16 and Vagrant 2.2.14. Currently have a VM running, no issues. The major hassles for me came a few OS versions earlier (Catalina), presumably due to tightened macOS security, so may be why it was smooth for me to update to 11.1.
Per the mentioned thread, did you try this?
- go to system preferences > security and privacy
- unlock to make a change
- unblock Oracle (might need a restart)
- Install Virtualbox again
- Linux VM started properly
Upgraded High Sierra to Big Sur 11.2.3 and encountered same failure. Without research, first updated to latest VirtualBox 6.1.18, then to vagrant 2.2.14, but same issue persisted, and then came across this topic.
Opened "System Preferences" -> "Security & Privacy". Found a message "System software from developer "Oracle America, Inc." has been updated. Clicked "Allow", then it asked for reboot so rebooted.
VirtualBox from vagrant then started up without any issue without reinstalling VirtualBox.
