diff --git a/Instructions/Labs/LAB_04-Implement_Virtual_Networking.md b/Instructions/Labs/LAB_04-Implement_Virtual_Networking.md
index 3b677875..3c000532 100644
--- a/Instructions/Labs/LAB_04-Implement_Virtual_Networking.md
+++ b/Instructions/Labs/LAB_04-Implement_Virtual_Networking.md
@@ -181,6 +181,8 @@ In this task, you will configure network security groups in order to allow for r
 
 1. Associate the **az104-04-nsg01** network security group with the **az104-04-nic0** and **az104-04-nic1** network interfaces.
 
+    >**Note**: It may take up to 5 minutes for the rules from the newly created Network Security Group to be applied to the Network Interface Card.
+
 1. Navigate back to the **az104-04-vm0** virtual machine blade.
 
     >**Note**: Now verify that you can successfully to the target virtual machine and sign in by using the **Student** username and **Pa55w.rd1234** password.