This article is based on the product specifications as of December 2025.
※ If an error message not listed in the table is displayed or if the issue is not resolved after following the countermeasures, please record the following information and contact your system administrator.
Additionally, HENNGE One administrators should provide this information to HENNGE One Technical Support.
・Error message
・[Device Certificate Information] in the device certificate issuance email
| HENNGE Device Certificate for Mac | |
|---|---|
| Error Message | Cause and Countermeasure |
| 400 Authentication of the device failed. Please check the input content. If the issue persists, contact the administrator. |
A device certificate corresponding to your device has not been issued. Please execute the installation of the device certificate from a device permitted by the administrator. The administrator should verify that the issued device certificate matches the device identifier. If the information above is correct, please try reinstalling the device certificate. |
| 401 The format of the certificate identifier is incorrect. Please check the input content. | There may be an issue with the certificate identifier. Please check the certificate identifier listed in the notification email. For macOS 15 and later, Private Wi-Fi may be enabled. Please refer to the following steps again, make the necessary configuration changes, and proceed with the installation. [Device Certificate] Install Device Certificates (macOS) |
| 403 Application authentication failed. Please contact the administrator. | The version of Cybertrust DeviceiD Importer may not be the latest, so please reinstall it. |
| 404 The application is not up to date. Please install the latest application and try again. | The version of Cybertrust DeviceiD Importer may not be the latest, so please reinstall it. |
| 501 The service is currently under maintenance and cannot be used. Please try again tomorrow. | Please try again after the maintenance is completed, on the following day or later. |
| 502 The connection was disconnected. Please try again in a location with a good connection. If the issue persists, contact the administrator. | ・An error occurred due to a communication failure or other reasons. Please wait for a while and try again in an environment with a good connection. ・The version of Cybertrust DeviceiD Importer may not be the latest, so please reinstall it. ・It may be blocked by a proxy server, so please contact the system administrator. |
| 500 Failed to obtain the certificate. Please contact the administrator. | The administrator may have revoked the certificate. Please contact the system administrator. |
| 503 Obtaining the certificate is not permitted. Please contact the administrator. | The download expiration date has passed, so please contact the system administrator. |
| E206 Certificate Authority Connection Error | The version of Cybertrust DeviceiD Importer may not be the latest, so please reinstall it. |
| Certificate Authority Connection Error | The version of Cybertrust DeviceiD Importer may not be the latest, so please reinstall it. |