diff --git a/extensions/data-workspace/src/common/workspaceTreeDataProvider.ts b/extensions/data-workspace/src/common/workspaceTreeDataProvider.ts
index a40b0377dc..efb6b10592 100644
--- a/extensions/data-workspace/src/common/workspaceTreeDataProvider.ts
+++ b/extensions/data-workspace/src/common/workspaceTreeDataProvider.ts
@@ -115,6 +115,14 @@ export class WorkspaceTreeDataProvider implements vscode.TreeDataProvider<Worksp
 	}
 
 	handleDrag(treeItems: readonly WorkspaceTreeItem[], dataTransfer: vscode.DataTransfer): void | Thenable<void> {
+		// Don't do anything if trying to drag the project node since it isn't supported. Because canSelectMany is set to false for WorkspaceTreeDataProvider,
+		// treeItems will only contain one treeItem, so we only need to check the first one in the list.
+		const relativePath = treeItems[0].element?.relativeProjectUri?.fsPath?.substring(1); // remove leading slash
+		const projBaseName = path.basename(treeItems[0].element?.projectFileUri?.fsPath, path.extname(treeItems[0].element?.projectFileUri?.fsPath));
+		if (relativePath === projBaseName) {
+			return;
+		}
+
 		dataTransfer.set('application/vnd.code.tree.WorkspaceTreeDataProvider', new vscode.DataTransferItem(treeItems.map(t => t.element)));
 	}