diff --git a/app/capabilities.js b/app/capabilities.js
index f97d34dc..3939fea2 100644
--- a/app/capabilities.js
+++ b/app/capabilities.js
@@ -86,7 +86,7 @@ export default async function getCapabilities() {
   }
   let account = typeof AUTH_CONFIG !== 'undefined';
   try {
-    account = account && !!localStorage && browserName() !== 'edge';
+    account = account && !!localStorage;
   } catch (e) {
     account = false;
   }
diff --git a/app/controller.js b/app/controller.js
index 95fa9ad3..9768e274 100644
--- a/app/controller.js
+++ b/app/controller.js
@@ -107,7 +107,19 @@ export default function(state, emitter) {
     render();
   });
 
+  /*
+    FIXME choo on Edge double-triggers loaded routes
+    causing 'authenticate' to fire twice which leads to
+    an error. Until that's fixed we have authLocked to
+    prevent the second event from causing the error.
+    Once choo doesn't double-trigger we can remove authLocked.
+  */
+  let authLocked = false;
   emitter.on('authenticate', async (code, oauthState) => {
+    if (authLocked) {
+      return;
+    }
+    authLocked = true;
     try {
       await state.user.finishLogin(code, oauthState);
       await state.user.syncFileList();
@@ -116,6 +128,7 @@ export default function(state, emitter) {
       emitter.emit('replaceState', '/error');
       setTimeout(render);
     }
+    authLocked = false;
   });
 
   emitter.on('upload', async () => {
diff --git a/app/routes.js b/app/routes.js
index 8405db9b..54a199a2 100644
--- a/app/routes.js
+++ b/app/routes.js
@@ -10,7 +10,7 @@ module.exports = function(app = choo()) {
   app.route('/legal', body(require('./ui/legal')));
   app.route('/error', body(require('./ui/error')));
   app.route('/blank', body(require('./ui/blank')));
-  app.route('/oauth', async function(state, emit) {
+  app.route('/oauth', function(state, emit) {
     emit('authenticate', state.query.code, state.query.state);
   });
   app.route('*', body(require('./ui/notFound')));
diff --git a/server/routes/index.js b/server/routes/index.js
index 3fd9f045..a43f0395 100644
--- a/server/routes/index.js
+++ b/server/routes/index.js
@@ -70,6 +70,7 @@ module.exports = function(app) {
   app.use(bodyParser.json());
   app.use(bodyParser.text());
   app.get('/', language, pages.index);
+  app.get('/error', language, pages.blank);
   app.get('/oauth', language, pages.blank);
   app.get('/legal', language, pages.legal);
   app.get('/app.webmanifest', language, require('./webmanifest'));