---
title: "Global CDN troubleshooting"
slug: "globalcdn-troubleshoot"
updated: 2026-09-17T09:04:13Z
published: 2026-09-17T09:18:24Z
canonical: "guide.ncloud-docs.com/globalcdn-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.

# Global CDN troubleshooting

Available in Classic and VPC

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

## Troubleshoot common issues

The following are examples of common errors you might encounter:

[Troubleshoot HTTPS protocol unavailable issues](/docs/en/globalcdn-troubleshoot-common#HTTPS%ED%94%84%EB%A1%9C%ED%86%A0%EC%BD%9C%EC%82%AC%EC%9A%A9%EB%B6%88%EA%B0%80) I need to use HTTPS, but only HTTP protocol is supported when I use my domain. I want to use HTTPS while using my own domain.

[Troubleshoot unspecific image calls unavailable issues](/docs/en/globalcdn-troubleshoot-common#%EB%B6%88%ED%8A%B9%EC%A0%95%EC%9D%B4%EB%AF%B8%EC%A7%80%ED%98%B8%EC%B6%9C%EB%B6%88%EA%B0%80) An unspecific image is not being called.

[Troubleshoot Cache Poisoning occurrence issues](/docs/en/globalcdn-troubleshoot-common#CachePoisoning%EB%B0%9C%EC%83%9D) Cache Poisoning issues occur.

## Troubleshoot caching issues

The following are examples of cache-related issues you might encounter:

[Troubleshoot previous image-displayed issues even after image changes](/docs/en/globalcdn-troubleshoot-cashing#Previous_image_displayed_even_after_image_changes) I've changed the image, but the previous image continues to be displayed.

[Troubleshoot content caching unavailable issues](/docs/en/globalcdn-troubleshoot-cashing#%EC%BD%98%ED%85%90%EC%B8%A0%EA%B0%80%EC%BA%90%EC%8B%B1%EB%90%98%EC%A7%80%EC%95%8A%EC%9D%8C) The content is not cached.

[Troubleshoot continued request issues after applying Global CDN](/docs/en/globalcdn-troubleshoot-cashing#GlobalCDN%EC%A0%81%EC%9A%A9%ED%9B%84%EC%97%90%EB%8F%84%EC%9B%90%EB%B3%B8%EC%84%9C%EB%B2%84%EC%97%90%EC%A7%80%EC%86%8D%EC%A0%81%EC%9D%B8%EC%9A%94%EC%B2%AD%EC%9C%A0%EC%9E%85) I've already applied Global CDN, but the origin server receives continued requests.

[Troubleshoot continued request issues to the origin server although the set Cache Expiry time has not passed](/docs/en/globalcdn-troubleshoot-cashing#CacheExpiry%EC%84%A4%EC%A0%95%EC%8B%9C%EA%B0%84%EC%9D%B4%EC%A7%80%EB%82%98%EC%A7%80%EC%95%8A%EC%95%98%EC%9D%8C%EC%97%90%EB%8F%84%EC%9B%90%EB%B3%B8%EC%84%9C%EB%B2%84%EC%97%90%EC%A7%80%EC%86%8D%EC%A0%81%EC%9D%B8%EC%9A%94%EC%B2%AD%EC%9C%A0%EC%9E%85) Although the set time on Cache Expiry has not passed, the origin server receives continued requests.

## Learning resources

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

- FAQs: [FAQs from Global CDN users](https://www.ncloud.com/support/faq/prod?categoryCode2=CTDVR&categoryCode3=SV_0022&page=1)
- NAVER Cloud Platform blog: [Introduction to the new product - Global CDN](https://blog.naver.com/n_cloudplatform/220993956279?trackingCode=blog_bloghome_searchlist)

              Note

              

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