diff --git a/builtin/providers/azurerm/resource_arm_network_interface_card.go b/builtin/providers/azurerm/resource_arm_network_interface_card.go
index 7450519b1..3c74bc3e0 100644
--- a/builtin/providers/azurerm/resource_arm_network_interface_card.go
+++ b/builtin/providers/azurerm/resource_arm_network_interface_card.go
@@ -172,6 +172,14 @@ func resourceArmNetworkInterfaceCreate(d *schema.ResourceData, meta interface{})
 		properties.NetworkSecurityGroup = &network.SecurityGroup{
 			ID: &nsgId,
 		}
+
+		networkSecurityGroupName, err := parseNetworkSecurityGroupName(nsgId)
+		if err != nil {
+			return err
+		}
+
+		armMutexKV.Lock(networkSecurityGroupName)
+		defer armMutexKV.Unlock(networkSecurityGroupName)
 	}
 
 	dns, hasDns := d.GetOk("dns_servers")
@@ -308,6 +316,17 @@ func resourceArmNetworkInterfaceDelete(d *schema.ResourceData, meta interface{})
 	resGroup := id.ResourceGroup
 	name := id.Path["networkInterfaces"]
 
+	if v, ok := d.GetOk("network_security_group_id"); ok {
+		networkSecurityGroupId := v.(string)
+		networkSecurityGroupName, err := parseNetworkSecurityGroupName(networkSecurityGroupId)
+		if err != nil {
+			return err
+		}
+
+		armMutexKV.Lock(networkSecurityGroupName)
+		defer armMutexKV.Unlock(networkSecurityGroupName)
+	}
+
 	_, err = ifaceClient.Delete(resGroup, name, make(chan struct{}))
 
 	return err
diff --git a/builtin/providers/azurerm/resource_arm_subnet.go b/builtin/providers/azurerm/resource_arm_subnet.go
index c5329b9f8..65df4f447 100644
--- a/builtin/providers/azurerm/resource_arm_subnet.go
+++ b/builtin/providers/azurerm/resource_arm_subnet.go
@@ -89,6 +89,14 @@ func resourceArmSubnetCreate(d *schema.ResourceData, meta interface{}) error {
 		properties.NetworkSecurityGroup = &network.SecurityGroup{
 			ID: &nsgId,
 		}
+
+		networkSecurityGroupName, err := parseNetworkSecurityGroupName(nsgId)
+		if err != nil {
+			return err
+		}
+
+		armMutexKV.Lock(networkSecurityGroupName)
+		defer armMutexKV.Unlock(networkSecurityGroupName)
 	}
 
 	if v, ok := d.GetOk("route_table_id"); ok {
@@ -182,6 +190,17 @@ func resourceArmSubnetDelete(d *schema.ResourceData, meta interface{}) error {
 	name := id.Path["subnets"]
 	vnetName := id.Path["virtualNetworks"]
 
+	if v, ok := d.GetOk("network_security_group_id"); ok {
+		networkSecurityGroupId := v.(string)
+		networkSecurityGroupName, err := parseNetworkSecurityGroupName(networkSecurityGroupId)
+		if err != nil {
+			return err
+		}
+
+		armMutexKV.Lock(networkSecurityGroupName)
+		defer armMutexKV.Unlock(networkSecurityGroupName)
+	}
+
 	armMutexKV.Lock(vnetName)
 	defer armMutexKV.Unlock(vnetName)
 
diff --git a/builtin/providers/azurerm/resource_arm_virtual_network.go b/builtin/providers/azurerm/resource_arm_virtual_network.go
index e8ad55c97..6be08d9f1 100644
--- a/builtin/providers/azurerm/resource_arm_virtual_network.go
+++ b/builtin/providers/azurerm/resource_arm_virtual_network.go
@@ -269,15 +269,6 @@ func resourceAzureSubnetHash(v interface{}) int {
 	return hashcode.String(subnet)
 }
 
-func parseNetworkSecurityGroupName(networkSecurityGroupId string) (string, error) {
-	id, err := parseAzureResourceID(networkSecurityGroupId)
-	if err != nil {
-		return "", fmt.Errorf("[ERROR] Unable to Parse Network Security Group ID '%s': %+v", networkSecurityGroupId, err)
-	}
-
-	return id.Path["networkSecurityGroups"], nil
-}
-
 func expandAzureRmVirtualNetworkVirtualNetworkSecurityGroupNames(d *schema.ResourceData) ([]string, error) {
 	nsgNames := make([]string, 0)
 
diff --git a/builtin/providers/azurerm/resourceid.go b/builtin/providers/azurerm/resourceid.go
index b05f4d75f..5a0a19a8a 100644
--- a/builtin/providers/azurerm/resourceid.go
+++ b/builtin/providers/azurerm/resourceid.go
@@ -95,3 +95,12 @@ func parseAzureResourceID(id string) (*ResourceID, error) {
 
 	return idObj, nil
 }
+
+func parseNetworkSecurityGroupName(networkSecurityGroupId string) (string, error) {
+	id, err := parseAzureResourceID(networkSecurityGroupId)
+	if err != nil {
+		return "", fmt.Errorf("[ERROR] Unable to Parse Network Security Group ID '%s': %+v", networkSecurityGroupId, err)
+	}
+
+	return id.Path["networkSecurityGroups"], nil
+}
\ No newline at end of file