Details of the event with ID 43 of the source Microsoft-Windows-NetworkDeviceEnrollmentService

Event Source:	Microsoft-Windows-NetworkDeviceEnrollmentService
Event ID:	43 (0x2B)
Event log:	Application
Event type:	Error
Symbolic Name:	EVENT_MSCEP_INVALID_USAGE_FOR_PASSWORD
Event text (English):	This password has already been used to request a (%1) certificate. Only one signing certificate and one exchange certificate can be issued per password. Obtain a new password to use with this request, or create a new request with a different key usage and the same password, then try again.
Event text (German):	This password has already been used to request a (%1) certificate. Only one signing certificate and one exchange certificate can be issued per password. Set a new password for this request or create a new request with a different key usage and the same password. Then repeat the process.

Parameter

The parameters contained in the event text are filled with the following fields:

• %1: KeyUsage (win:UnicodeString)

The Network Device Enrollment Service (NDES) provides a way for devices that do not have an identifier in Active Directory (for example, network devices such as routers, switches, printers, thin clients, or smartphones and tablets) to request certificates from a certification authority. For a more detailed description, see the article "Network Device Enrollment Service (NDES) Basics„.

Example events

This password has already been used to request a (SIGNATURE) certificate. Only one signing certificate and one exchange certificate can be issued per password. Obtain a new password to use with this request, or create a new request with a different key usage and the same password, then try again.

Description

The message occurs when a certificate request is submitted via NDES with a password that has already been used. NDES supports three different certificate types, which are distinguished by their key usage extension.

These three certificate types could be set up once separately with the same password. Since in practice only one certificate type is usually used, this error message occurs when a password is reused.

See also Event no. 29.

Safety assessment

The security assessment is based on the three dimensions of confidentiality, integrity and availability.

No description has been written for this yet.

Related links:

• Overview of Windows events generated by the Network Device Enrollment Service (NDES).

External sources

• Active Directory Certificate Services (AD CS): Network Device Enrollment Service (NDES) (Microsoft)