diff --git a/guacamole/src/main/frontend/src/app/clipboard/services/clipboardService.js b/guacamole/src/main/frontend/src/app/clipboard/services/clipboardService.js
index 52ca83a3e..a7e0f3d7e 100644
--- a/guacamole/src/main/frontend/src/app/clipboard/services/clipboardService.js
+++ b/guacamole/src/main/frontend/src/app/clipboard/services/clipboardService.js
@@ -619,7 +619,11 @@ angular.module('clipboard').factory('clipboardService', ['$injector',
         $rootScope.$broadcast('clipboardSyncInProgress', true);
         getLocalClipboard().then(function clipboardRead(data) {
             return service.setClipboard(data);
-        }, angular.noop);
+        }, function clipboardReadFailed() {
+            // Clipboard sync state must be cleared on failure so that
+            // handleMouseEvents(e) won't be blocked.
+            $rootScope.$broadcast('clipboardSyncInProgress', false);
+        });
     };
 
     return service;