This seems like a known bug in version 3.1.17. The Extension Host doesn’t start up in time, which causes Source Control, Git integration, and some editors to stop working. Several other users have reported the same issue: Cursor IDE unable to load the Github branches.
Try this workaround:
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Fully quit Cursor (check Task Manager to make sure no Cursor processes are still running).
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Navigate to
%APPDATA%\Cursor\User\workspaceStorage\and delete or back up the contents. -
Reopen Cursor and your project.
If that doesn’t help, try Ctrl+Shift+P > Clear Editor History, then reload the window with Ctrl+Shift+P > Developer: Reload Window.
Our team is aware of this and working on a fix.

