---
title: "Troubleshoot certificate issuance issues"
slug: "certificatemanager-troubleshoot-issue"
updated: 2026-10-08T06:58:33Z
published: 2026-10-08T06:58:33Z
canonical: "guide.ncloud-docs.com/certificatemanager-troubleshoot-issue"
---

> ## 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.

# Troubleshoot certificate issuance issues

Available in Classic and VPC

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

## Domain name error

A domain name error occurs when you request a certificate.

#### Cause

Domain names can contain only English letters, numbers, and hyphens (-).

#### Solution

- Enter characters that conform to the domain name rules. Remove any characters other than English letters, numbers, or hyphens.
- Check if the input is in the correct domain format.

## Certificate not issued

The certificate is not issued.

#### Cause

If you choose DNS validation for the domain validation method and do not enter the validation result in the domain's records, the certificate may not be issued.

#### Solution

Check the domain's DNS validation value and enter it in the domain's DNS management system. For more information, see [DNS validation](/docs/en/certificatemanager-domainvalid-dns).

## Error applying a certificate to a server

The certificate cannot be applied to the server.

#### Cause and solution

**Cloud Basic certificate** Cloud Basic certificates can only be used with Load Balancer and Global Edge on NAVER Cloud Platform.

**Enterprise Certificate** You can download an Enterprise Certificate and apply it to your server.

- Select a certificate under **Enterprise Certificate** > **Order List** and click **[Download]**.
  - Use the private key password you entered when downloading the certificate to decrypt the private key file or apply the certificate to a web application.
  - Some web applications may not be able to use the encrypted private key file. In such cases, decrypt the private key first and then use it.
    - Example: `openssl rsa -in private_enc.key -out private.key`
- For detailed instructions, see the certificate installation instructions for your web application.

              Note

              

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