diff --git a/store-for-business/prerequisites-microsoft-store-for-business.md b/store-for-business/prerequisites-microsoft-store-for-business.md
index d0c8a17014..618205cdd5 100644
--- a/store-for-business/prerequisites-microsoft-store-for-business.md
+++ b/store-for-business/prerequisites-microsoft-store-for-business.md
@@ -56,6 +56,7 @@ If your organization restricts computers on your network from connecting to the
 -   windowsphone.com
 -   \*.wns.windows.com
 -   \*.microsoft.com
+-   \*.s-microsoft.com
 -   www.msftncsi.com (prior to Windows 10, version 1607)
 -   www.msftconnecttest.com/connecttest.txt (replaces www.msftncsi.com
 starting with Windows 10, version 1607)