diff --git a/extensions/vscode-test-resolver/src/extension.browser.ts b/extensions/vscode-test-resolver/src/extension.browser.ts
index e95db8d30ad..93703fde4df 100644
--- a/extensions/vscode-test-resolver/src/extension.browser.ts
+++ b/extensions/vscode-test-resolver/src/extension.browser.ts
@@ -9,6 +9,8 @@ export function activate(_context: vscode.ExtensionContext) {
 	vscode.workspace.registerRemoteAuthorityResolver('test', {
 		async resolve(_authority: string): Promise<vscode.ResolverResult> {
 			console.log(`Resolving ${_authority}`);
+			console.log(`Activating vscode.github-authentication to simulate auth`);
+			await vscode.extensions.getExtension('vscode.github-authentication')?.activate();
 			return new vscode.ManagedResolvedAuthority(async () => {
 				return new InitialManagedMessagePassing();
 			});
diff --git a/src/vs/server/node/webClientServer.ts b/src/vs/server/node/webClientServer.ts
index 703b43c8617..f734e11411c 100644
--- a/src/vs/server/node/webClientServer.ts
+++ b/src/vs/server/node/webClientServer.ts
@@ -28,6 +28,7 @@ import { IProductConfiguration } from 'vs/base/common/product';
 import { isString } from 'vs/base/common/types';
 import { CharCode } from 'vs/base/common/charCode';
 import { getRemoteServerRootPath } from 'vs/platform/remote/common/remoteHosts';
+import { IExtensionManifest } from 'vs/platform/extensions/common/extensions';
 
 const textMimeType = {
 	'.html': 'text/html',
@@ -343,9 +344,12 @@ export class WebClientServer {
 		};
 
 		if (useTestResolver) {
-			const filePath = FileAccess.asFileUri(`${builtinExtensionsPath}/vscode-test-resolver/package.json`).fsPath;
-			const packageJSON = JSON.parse((await fsp.readFile(filePath)).toString());
-			values['WORKBENCH_BUILTIN_EXTENSIONS'] = asJSON([{ extensionPath: 'vscode-test-resolver', packageJSON }]);
+			const bundledExtensions: { extensionPath: string; packageJSON: IExtensionManifest }[] = [];
+			for (const extensionPath of ['vscode-test-resolver', 'github-authentication']) {
+				const packageJSON = JSON.parse((await fsp.readFile(FileAccess.asFileUri(`${builtinExtensionsPath}/${extensionPath}/package.json`).fsPath)).toString());
+				bundledExtensions.push({ extensionPath, packageJSON });
+			}
+			values['WORKBENCH_BUILTIN_EXTENSIONS'] = asJSON(bundledExtensions);
 		}
 
 		let data;