diff --git a/packages/typescript/lib/quickstart/createAsyncLanguageServicePlugin.ts b/packages/typescript/lib/quickstart/createAsyncLanguageServicePlugin.ts
index aed90e0d..bb0aa243 100644
--- a/packages/typescript/lib/quickstart/createAsyncLanguageServicePlugin.ts
+++ b/packages/typescript/lib/quickstart/createAsyncLanguageServicePlugin.ts
@@ -82,7 +82,12 @@ export function createAsyncLanguageServicePlugin(
 							],
 							new FileMap(ts.sys.useCaseSensitiveFileNames),
 							fileName => {
-								const snapshot = info.project.getScriptInfo(fileName)?.getSnapshot();
+								let snapshot = info.project.getScriptInfo(fileName)?.getSnapshot();
+								if (!snapshot) {
+									// trigger projectService.getOrCreateScriptInfoNotOpenedByClient
+									info.project.getScriptVersion(fileName);
+									snapshot = info.project.getScriptInfo(fileName)?.getSnapshot();
+								}
 								if (snapshot) {
 									language.scripts.set(fileName, snapshot);
 								}
diff --git a/packages/typescript/lib/quickstart/createLanguageServicePlugin.ts b/packages/typescript/lib/quickstart/createLanguageServicePlugin.ts
index c13f95c9..725a2777 100644
--- a/packages/typescript/lib/quickstart/createLanguageServicePlugin.ts
+++ b/packages/typescript/lib/quickstart/createLanguageServicePlugin.ts
@@ -41,7 +41,12 @@ export function createLanguageServicePlugin(
 						],
 						new FileMap(ts.sys.useCaseSensitiveFileNames),
 						fileName => {
-							const snapshot = info.project.getScriptInfo(fileName)?.getSnapshot();
+							let snapshot = info.project.getScriptInfo(fileName)?.getSnapshot();
+							if (!snapshot) {
+								// trigger projectService.getOrCreateScriptInfoNotOpenedByClient
+								info.project.getScriptVersion(fileName);
+								snapshot = info.project.getScriptInfo(fileName)?.getSnapshot();
+							}
 							if (snapshot) {
 								language.scripts.set(fileName, snapshot);
 							}