diff --git a/build/gulpfile.extensions.js b/build/gulpfile.extensions.js
index 12e34f60aff..6f7a9e678b4 100644
--- a/build/gulpfile.extensions.js
+++ b/build/gulpfile.extensions.js
@@ -205,7 +205,7 @@ async function buildWebExtensions(isWatch) {
 			for (const stats of fullStats.children) {
 				const outputPath = stats.outputPath;
 				if (outputPath) {
-					const relativePath = path.relative(extensionsPath, outputPath);
+					const relativePath = path.relative(extensionsPath, outputPath).replace(/\\/g, '/');
 					const match = relativePath.match(/[^\/]+(\/server|\/client)?/);
 					fancyLog(`Finished ${ansiColors.green('packaging web extension')} ${ansiColors.cyan(match[0])} with ${stats.errors.length} errors.`);
 				}
diff --git a/extensions/html-language-features/server/extension-browser.webpack.config.js b/extensions/html-language-features/server/extension-browser.webpack.config.js
index e91bb6a37bc..ae024e8d7dd 100644
--- a/extensions/html-language-features/server/extension-browser.webpack.config.js
+++ b/extensions/html-language-features/server/extension-browser.webpack.config.js
@@ -22,11 +22,11 @@ const serverConfig = withBrowserDefaults({
 	},
 	optimization: {
 		splitChunks: {
-			chunks: "async"
+			chunks: 'async'
 		}
 	}
 });
-serverConfig.module.noParse =  /typescript\/lib\/typescript\.js/;
+serverConfig.module.noParse =  /typescript[\/\\]lib[\/\\]typescript\.js/;
 serverConfig.module.rules.push({
 	test: /javascriptLibs.ts$/,
 	use: [