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)
The Certificate Enrollment Web Services (Certificate Enrollment Policy Web Service, CEP, and Certificate Enrollment Web Service, CES) enable the automatic request and renewal of certificates from a certification authority via a Web-based interface. This eliminates the need to contact the certification authority directly via Remote Procedure Call (RPC). For a more detailed description, see the article "Certificate request basics via Certificate Enrollment Web Services (CEP, CES)„.
Possible causes can be:
- There is no connection from the CES to the certification authority, for example if the certification authority is not started or a firewall discards the connection without notifying the sender. See also article "Required firewall rules for the Certificate Enrollment Web Service (CES)„.
English 
Deutsch