diff --git a/src/assets/HTMLAsset.js b/src/assets/HTMLAsset.js
index 446ba8c0fd7..e3b2b13c296 100644
--- a/src/assets/HTMLAsset.js
+++ b/src/assets/HTMLAsset.js
@@ -3,6 +3,7 @@ const posthtml = require('posthtml');
 const parse = require('posthtml-parser');
 const api = require('posthtml/lib/api');
 const path = require('path');
+const url = require('url');
 const md5 = require('../utils/md5');
 const render = require('posthtml-render');
 const posthtmlTransform = require('../transforms/posthtml');
@@ -47,7 +48,12 @@ class HTMLAsset extends Asset {
           if (elements && elements.includes(node.tag)) {
             let assetPath = this.addURLDependency(node.attrs[attr]);
             if (!isURL(assetPath)) {
-              assetPath = path.join(this.options.publicURL, assetPath);
+              // Use url.resolve to normalize path for windows
+              // from \path\to\res.js to /path/to/res.js
+              assetPath = url.resolve(
+                path.join(this.options.publicURL, assetPath),
+                ''
+              );
             }
             node.attrs[attr] = assetPath;
             this.isAstDirty = true;
diff --git a/src/packagers/HTMLPackager.js b/src/packagers/HTMLPackager.js
index a2e8677b176..d0b68b637c5 100644
--- a/src/packagers/HTMLPackager.js
+++ b/src/packagers/HTMLPackager.js
@@ -1,6 +1,7 @@
 const Packager = require('./Packager');
 const posthtml = require('posthtml');
 const path = require('path');
+const url = require('url');
 
 class HTMLPackager extends Packager {
   async addAsset(asset) {
@@ -39,7 +40,10 @@ class HTMLPackager extends Packager {
         tag: 'link',
         attrs: {
           rel: 'stylesheet',
-          href: path.join(this.options.publicURL, path.basename(bundle.name))
+          href: url.resolve(
+            path.join(this.options.publicURL, path.basename(bundle.name)),
+            ''
+          )
         }
       });
     }
diff --git a/src/packagers/RawPackager.js b/src/packagers/RawPackager.js
index 08ac88c40f6..4cd6d47b5c3 100644
--- a/src/packagers/RawPackager.js
+++ b/src/packagers/RawPackager.js
@@ -1,6 +1,7 @@
 const Packager = require('./Packager');
 const fs = require('../utils/fs');
 const path = require('path');
+const url = require('url');
 
 class RawPackager extends Packager {
   // Override so we don't create a file for this bundle.
@@ -11,9 +12,9 @@ class RawPackager extends Packager {
     // Use the bundle name if this is the entry asset, otherwise generate one.
     let name = this.bundle.name;
     if (asset !== this.bundle.entryAsset) {
-      name = path.join(
-        path.dirname(this.bundle.name),
-        asset.generateBundleName()
+      name = url.resolve(
+        path.join(path.dirname(this.bundle.name), asset.generateBundleName()),
+        ''
       );
     }