Thanks for the update. Since everything works in a clean profile, the cause is an extension or a setting in the original profile.
What to do next:
- In the problematic profile, disable all extensions and restart Cursor. If the error goes away, enable them one by one.
- Start by removing Nx Console (nrwl.angular-console) - it’s already confirmed as a cause of the same error: Unable to Reach Model Provider for All Models Except Composer1
- If it still breaks with all extensions disabled, close Cursor and rename the profile folder:
%APPDATA%\Cursor\User→User.backup, then launch Cursor and check. - You can work in a new window. To make the profile persistent, run:
cursor --user-data-dir="C:\CursorCleanProfile» and keep using that profile.
About chat history: without a backup, recovery is usually impossible. Discussion and options are here: Urgent – Lost All Chat and Agent Mode History
Let me know if the error disappears after removing Nx Console or with extensions disabled.