diff --git a/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp4.c b/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp4.c
index b2c03eb269..bb65445fc9 100644
--- a/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp4.c
+++ b/NetworkPkg/UefiPxeBcDxe/PxeBcDhcp4.c
@@ -320,6 +320,7 @@ PxeBcBuildDhcp4Options (
     //
     // Zero the Guid to indicate NOT programable if failed to get system Guid.
     //
+    DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios table!\n"));
     ZeroMem (OptEnt.Uuid->Guid, sizeof (EFI_GUID));
   }
 
@@ -1282,6 +1283,7 @@ PxeBcDhcp4CallBack (
         //
         // Zero the Guid to indicate NOT programable if failed to get system Guid.
         //
+        DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios table!\n"));
         ZeroMem (Packet->Dhcp4.Header.ClientHwAddr, sizeof (EFI_GUID));
       }
       Packet->Dhcp4.Header.HwAddrLen = (UINT8) sizeof (EFI_GUID);
@@ -1470,6 +1472,7 @@ PxeBcDhcp4Discover (
       //
       // Zero the Guid to indicate NOT programable if failed to get system Guid.
       //
+      DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios table!\n"));
       ZeroMem (Token.Packet->Dhcp4.Header.ClientHwAddr, sizeof (EFI_GUID));
     }
     Token.Packet->Dhcp4.Header.HwAddrLen = (UINT8)  sizeof (EFI_GUID);
diff --git a/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c b/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c
index 9068e0686c..d3146c3a7e 100644
--- a/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c
+++ b/NetworkPkg/UefiPxeBcDxe/PxeBcImpl.c
@@ -1949,6 +1949,7 @@ EfiPxeBcSetParameters (
 
   if (NewSendGUID != NULL) {
     if (*NewSendGUID && EFI_ERROR (NetLibGetSystemGuid (&SystemGuid))) {
+      DEBUG ((EFI_D_WARN, "PXE: Failed to read system GUID from the smbios table!\n"));
       return EFI_INVALID_PARAMETER;
     }
     Mode->SendGUID = *NewSendGUID;