Firewall - Page 2 - Uwe Gradenegger

Requesting certificates via Certificate Enrollment Web Service (CES) fails with error code "ERROR_WINHTTP_TIMEOUT".

Assume the following scenario:

You try to request a certificate via a Certificate Enrollment Web Service (CEP) from an Active Directory-integrated certification authority (Enterprise Certification Authority).
The operation fails with the following error message:

Certificate Request Processor: The operation timed out 0x80072ee2 (WinHttp: 12002 ERROR_WINHTTP_TIMEOUT)

Requesting certificates via Certificate Enrollment Web Service (CES) fails with error code "WS_E_OPERATION_TIMED_OUT".

Assume the following scenario:

You try to request a certificate via a Certificate Enrollment Web Service (CEP) from an Active Directory-integrated certification authority (Enterprise Certification Authority).
The operation fails with the following error message:

Certificate Request Processor: The operation did not complete within the time allotted. 0x803d0006 (-2143485946 WS_E_OPERATION_TIMED_OUT)

Firewall rules required for Active Directory Certificate Services

Implementing an Active Directory integrated certification authority often requires planning the firewall rules to be created on the network. The following is a list of the required firewall rules and any pitfalls.

Role configuration for Network Device Enrollment Service (NDES) fails with error message "The RPC server is unavailable. 0x800706ba (WIN32: 1722 RPC_S_SERVER_UNAVAILABLE)".

Assume the following scenario:

One installs a Network Device Enrollment Service (NDES) server
One has the necessary permissions to install the role (local administrator, enterprise administrator)
The role configuration fails with the following error message:

The RPC server is unavailable. 0x800706ba (WIN32: 1722 RPC_S_SERVER_UNAVAILABLE)