diff --git a/src/sql/workbench/services/notebook/common/notebookServiceImpl.ts b/src/sql/workbench/services/notebook/common/notebookServiceImpl.ts
index 15b45ddfb5..dcb47d8e19 100644
--- a/src/sql/workbench/services/notebook/common/notebookServiceImpl.ts
+++ b/src/sql/workbench/services/notebook/common/notebookServiceImpl.ts
@@ -109,6 +109,13 @@ export class NotebookService extends Disposable implements INotebookService {
 		super();
 		this._memento = new Memento('notebookProviders', this._storageService);
 		this._register(notebookRegistry.onNewRegistration(this.updateRegisteredProviders, this));
+		// If a provider has been already registered, the onNewRegistration event will not have a listener attached yet
+		// So, explicitly updating registered providers here.
+		if (notebookRegistry.providers.length > 0) {
+			notebookRegistry.providers.forEach(p => {
+				this.updateRegisteredProviders({id: p.provider, registration: p});
+			});
+		}
 		this.registerBuiltInProvider();
 
 		if (extensionService) {