--- title: "Global Traffic Manager troubleshooting" slug: "gtm-troubleshoot" updated: 2026-09-17T09:05:06Z published: 2026-09-17T09:18:24Z canonical: "guide.ncloud-docs.com/gtm-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 Traffic Manager troubleshooting Available in Classic and VPC This page lists problems you might run into when using Global Traffic Manager. Click on the error to see more details. ## Troubleshooting common issues The following are examples of common errors you might encounter: [Fail Over / Active-Backup setup](/docs/en/gtm-troubleshoot-common#FailOverActiveBackup%EC%84%A4%EC%A0%95) I am trying to set up Fail Over and Active-Backup so that failback is possible without disrupting the service. [Restricting number of response resources](/docs/en/gtm-troubleshoot-common#%EC%9D%91%EB%8B%B5%EB%A6%AC%EC%86%8C%EC%8A%A4%EA%B0%9C%EC%88%98) Want to restrict the number of response resources. [Domain health check](/docs/en/gtm-troubleshoot-common#%EB%8F%84%EB%A9%94%EC%9D%B8%ED%97%AC%EC%8A%A4%EC%B2%B4%ED%81%AC) Domain health check is impossible. [Changing status code during health check setup](/docs/en/gtm-troubleshoot-common#%EB%8F%84%EB%A9%94%EC%9D%B8%ED%97%AC%EC%8A%A4%EC%B2%B4%ED%81%AC) Want to change status code while setting up health check (for HTTP or HTTPS). ## Learning resources We offer various materials for you to explore. To learn more about Global Traffic Manager, check out these helpful links: - FAQs: [Frequently asked questions from Global Traffic Manager users](https://www.ncloud.com/support/faq/prod?categoryCode2=NET&categoryCode3=SV_0221&page=1) Note If you’re still having trouble finding what you need, click on the feedback icon and send us your thoughts and requests. We’ll use your feedback to improve this guide.