Where does the bug appear (feature/product)? Cursor IDE Describe the Bug Terminal sandbox could not start. This may be caused by an AppArmor configuration on your Linux system (kernel 6.2+). See the documentation for how to resolve this. Steps to Reproduce just lunch cursor, message there. termin…

Hey, this is a known issue on Linux with kernel 6,2+ and we already have a full thread about it: Terminal Sandbox Issue Linux Since your terminal works fine, the easiest option is to click Don’t Show Again in the notification and it won’t show up anymore. If you want to try fixing the sandbox prop…

Error message when opening cursor-Terminal sandbox could not start

Support Bug Reports

Topic		Replies	Views
Terminal sandbox could not start Bug Reports sandbox , terminal , linux	0	2393	February 26, 2026
Linux: terminal sandbox preflight fails — `uid_map` EPERM after mitigations (earlier: loopback error) Bug Reports sandbox , terminal , linux	2	40	March 27, 2026
Terminal sandbox fails on first start in 2.5.26: "loopback: failed to look up lo interface" Bug Reports sandbox , terminal , linux	1	249	February 26, 2026
Ubuntu 24.04.4 LTS: "Run in sandbox" not available Bug Reports sandbox , auto-run , linux	2	175	March 21, 2026
Cursor-sandbox-remote AppArmor profile missing abi declaration and network rule — breaks sandbox on Ubuntu 24.04+ Bug Reports sandbox , ssh , security , linux	2	733	March 4, 2026

Error message when opening cursor-Terminal sandbox could not start

Related topics