I am working on a unity project, and when i open a script it will give me a warning in the bottom left of cursor telling me that: The active document is not part of the open workspace. Not all language features will be available: source C#.
Google says to close the folder and reopen it through cursor and other things about trying to reopen the file in various ways. I do those and it just changes what active file is now giving the error. I can not for the life of me find a way to fix it and im concerned that it will result in something not working as intended. What can i do?
Hey, thanks for the request. This isn’t a bug and it doesn’t affect the Unity project itself. The game is compiled by Unity’s own compiler, regardless of Cursor editor features. The warning only means the C# language server couldn’t attach the open .cs file to the loaded project, so IntelliSense and diagnostics for that file are limited.
To get full language features back:
Open the Unity project root folder, the one that directly contains Assets/, Packages/, and the generated .sln file. Don’t open a single file or a parent folder.
In Unity go to Edit → Preferences → External Tools, set External Script Editor to Cursor, then click Regenerate project files so the .sln and .csproj files are created and up to date.
Make sure the C# extension anysphere.csharp is installed and enabled in Cursor.
Do Reload Window, or restart the C# language server, so it picks up the updated solution.
If the warning is still there, check for extra or nested .sln files inside subfolders. Nested solutions can confuse the server, keep only the Unity generated one in the root.