HTTP Error 500 - Uwe Gradenegger

Requesting certificates via Network Device Enrollment Service (NDES) fails with HTTP error code 500

Assume the following scenario:

A network device enrollment service (NDES) is implemented in the network.
The NDES server uses a domain account for the identity of the SCEP IIS application pool.
Requesting certificates via NDES fails with HTTP error code 500 (Internal Server Error).
Calling the mscep and mscep_admin pages also fails with HTTP error code 500.
Even after an iisreset or restart of the NDES server, no event appears after calling the mscep or mscsp_admin page that the NDES service has started or that there were errors.

Assume the following scenario:

An NDES server is configured on the network.
When accessing the NDES application web page (mscep) and the NDES administration web page (certsrv/mscep_admin), HTTP error 500 (Internal Server Error) is reported with error code 0x80004005.
The events are No. 2 and No. 8 stored in the application event log:

The Network Device Enrollment Service cannot be started (0x80004005). Unspecified error

Assume the following scenario:

A Certificate Authority Web Enrollment (CAWE) server is installed on the network.
The role is installed on a separate server, not on the certification authority directly.
A user attempts to request a certificate via the certification authority web enrollment or submit an existing certificate request to the certification authority.
The request takes a very long time and finally fails with HTTP code 500 "Internal server error":

There is a problem with the resource you are looking for, and it cannot be displayed.

Assume the following scenario:

An NDES server is configured on the network.
HTTP error 500 (Internal Server Error) is reported when accessing the NDES application web page (mscep) and the NDES administration web page (certsrv/mscep_admin).
It will be the Event No. 2 stored in the application event log:

The Network Device Enrollment Service cannot be started (0x80070002). The system cannot find the file specified.

Assume the following scenario:

An NDES server is configured on the network.
HTTP error 500 (Internal Server Error) is reported when accessing the NDES application web page (mscep) and the NDES administration web page (certsrv/mscep_admin).
The events no. 2 and 10 stored in the application event log:

The Network Device Enrollment Service cannot be started (0x80070057). The parameter is incorrect.

The Network Device Enrollment Service cannot retrieve one of its required certificates (0x80070057). The parameter is incorrect.