---
title: "SFC issues"
slug: "vpc-troubleshoot-sfc"
updated: 2026-09-17T09:18:13Z
published: 2026-09-17T09:18:13Z
canonical: "guide.ncloud-docs.com/vpc-troubleshoot-sfc"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://guide.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# SFC issues

Available in VPC

You might run into the following problems when using VPC. Find out causes and possible solutions.

## Integration with other region VPC or other account VPC

I am trying to create Transit VPC Connect to connect to VPC in another region or account, but it's not working.

#### Cause

You can't integrate VPCs in other regions.

#### Solution

You can't integrate VPCs in other regions but can integrate with other account VPC in the same region. See [Transit VPC Connect](/docs/en/vpc-transitvpcconnect-vpc).

## VPC Peering cannot be done between public and private VPCs

VPC Peering to integrate public and private VPCs is impossible.

#### Cause

Cross-platform VPC Peering is not supported.

#### Solution

Cross-platform VPC Peering is not supported. For cross-platform integration, use an IPsec VPN. For more information, see [Private Subnet Create for Public Subnet and On-premise connections](/docs/en/vpc-procedure-vpc#PublicSubnet%EB%B0%8FOnpremise%EC%97%B0%EA%B2%B0%EC%9A%A9PrivateSubnet%EC%83%9D%EC%84%B1) and [IPsec VPN guide](/docs/en/ipsecvpn-overview).

## Server images cannot be created when building your company's security solution

I tried to deploy your security solution on Transit VPC, which is identified as a new service for building secure VPC, but the **[Next]** button is not enabled after selecting the server image.

#### Cause

All NICs must be registered.

#### Solution

Please register both NICs.

              Note

              

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