---
title: "VPC troubleshooting"
slug: "vpc-troubleshoot"
updated: 2026-09-17T09:05:01Z
published: 2026-09-17T09:18:24Z
canonical: "guide.ncloud-docs.com/vpc-troubleshoot"
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.

# VPC troubleshooting

Available in VPC

This page lists problems you might run into when using VPC. Click on the error to see more details.

## Troubleshoot common issues

The following are examples of common errors you might encounter:

[VPC creation errors](/docs/en/vpc-troubleshoot-common#VPC%EC%83%9D%EC%84%B1%EC%98%A4%EB%A5%98) VPC is not created. I can't add VPC from sub accounts.

[VPC deletion errors](/docs/en/vpc-troubleshoot-common#VPC%EC%82%AD%EC%A0%9C%EC%98%A4%EB%A5%98) VPC is not deleted. When deleting a VPC, I received the message "It cannot be deleted because not all Endpoints were returned."

[VPC and subnet name cannot be changed](/docs/en/vpc-troubleshoot-common#VPC%EB%AA%85Subnet%EB%AA%85%EB%B3%80%EA%B2%BD%EB%B6%88%EA%B0%80) VPC name is not changed. I can't change the Subnet name.

[Error message: "Subnet CIDR cannot be duplicated within VPC"](/docs/en/vpc-troubleshoot-common#SubnetCIDR%EA%B0%80VPC%EB%82%B4%EC%97%90%EC%84%9C%EC%A4%91%EB%B3%B5%EB%90%A0%EC%88%98%EC%97%86%EC%8A%B5%EB%8B%88%EB%8B%A4%EC%98%A4%EB%A5%98%EB%A9%94%EC%8B%9C%EC%A7%80) When creating Subnet, I received the error message "Subnet CIDR cannot be duplicated within VPC." and the Subnet is not created.

[VPC Peering error](/docs/en/vpc-troubleshoot-common#VPCPeering%EC%98%A4%EB%A5%98) An error occurs during the VPC Peering setup.

## Troubleshooting SFC

The following are examples of SFC related errors you might encounter:

[Integrate with VPC in another region or account](/docs/en/vpc-troubleshoot-sfc#%ED%83%80%EB%A6%AC%EC%A0%84VPC%EB%98%90%EB%8A%94%ED%83%80%EA%B3%84%EC%A0%95VPC%EC%99%80%EC%97%B0%EB%8F%99) I created Transit VPC Connect to connect to VPC in another region or account, but it doesn't work.

[VPC Peering cannot be done between public and private VPCs](/docs/en/vpc-troubleshoot-sfc#%EA%B3%B5%EA%B3%B5VPC%EC%99%80%EB%AF%BC%EA%B0%84VPC%EC%97%B0%EB%8F%99%EB%B6%88%EA%B0%80) VPC peering to integrate public and private VPCs is impossible.

[Server images cannot be created when building your company's security solution](/docs/en/vpc-troubleshoot-sfc#%EC%9E%90%EC%82%AC%EB%B3%B4%EC%95%88%EC%86%94%EB%A3%A8%EC%85%98%EA%B5%AC%EC%B6%95%EC%8B%9C%EC%84%9C%EB%B2%84%EC%9D%B4%EB%AF%B8%EC%A7%80%EC%83%9D%EC%84%B1%EB%B6%88%EA%B0%80) 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.

## Learning resources

We offer various materials for you to explore. To learn more about VPC, check out these helpful links:

- FAQs: [VPC FAQs](https://www.ncloud.com/support/faq/prod?categoryCode2=NET&categoryCode3=SV_0155&page=1)
- NAVER Cloud Platform blog: [Release of VPC - Service Function Chain (SFC): Leverage familiar network/security appliances in the Cloud](https://blog.naver.com/n_cloudplatform/223361943546?trackingCode=external)
- NAVER Cloud Platform blog: [VPC Peering for efficient DR configuration across regions](https://blog.naver.com/n_cloudplatform/223129759840?trackingCode=external)

              Note

              

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