diff --git a/packages/core/src/api/sync/index.ts b/packages/core/src/api/sync/index.ts
index d773dc8da..eff19763e 100644
--- a/packages/core/src/api/sync/index.ts
+++ b/packages/core/src/api/sync/index.ts
@@ -231,6 +231,7 @@ class Sync {
   }
 
   async send(deviceId: string, isForceSync?: boolean) {
+    return false;
     await this.uploadAttachments();
 
     let done = 0;