ERROR_CTX_SHADOW_NOT_RUNNING - 7057 (0x1B91)

Technical Background

The ERROR_CTX_SHADOW_NOT_RUNNING error, with the numeric code 7057 and hex code 0x1B91, is encountered when an attempt is made to terminate a remote control session that does not currently exist. This error indicates that the operation was initiated under the assumption that a specific session was being remotely controlled, but upon inspection, it was found that no such session exists.

Error Details

The error ERROR_CTX_SHADOW_NOT_RUNNING is indicative of a capability issue within the Windows operating system. Specifically, it pertains to the Remote Desktop Services (RDS) or similar remote control mechanisms where sessions are managed and terminated based on their current state.

Common Causes

• Incorrect Session Identification: The session identifier provided in the operation context does not correspond to any currently active remote control session.
• Session Termination Attempt Before Initialization: An attempt was made to terminate a session before it had been properly initialized or established.
• Session State Mismatch: The state of the session at the time of the termination request did not match the expected state, leading to this error.

Real-World Context

This error can occur in various scenarios where remote control sessions are managed and terminated. For example, it might be encountered when a user or an application attempts to terminate a remote control session that was never initiated or has already been terminated by another means.

Is This Error Critical?

The ERROR_CTX_SHADOW_NOT_RUNNING is not critical from a system stability perspective but can impact the usability of certain operations. It indicates that the operation cannot proceed as intended due to an incorrect assumption about the state of the session.

How to Diagnose

To diagnose this error, one should review the context in which the remote control session was initiated and ensure that it is correctly identified. This may involve:

• Reviewing Operation Context: Confirming the correct session identifier or handle used for the operation.
• Validating Parameters: Ensuring all parameters passed to the API call are valid and correctly identify the intended session.
• Confirming Object Types: Verifying that the object types involved in the operation (e.g., session handles) are appropriate and correctly identified.

How to Resolve

To resolve this error, one should ensure that the remote control session is properly established before attempting to terminate it. This can be achieved by:

• Correct Parameter Usage: Using valid parameters that accurately identify the intended session.
• Adjust Operation Context: Ensuring that the operation context matches the state of the session being managed.

Developer Notes

Developers should ensure that their code properly handles session states and identifiers to avoid this error. This includes validating input parameters, managing session lifecycles correctly, and ensuring that operations are only performed on active sessions.

Related Errors

• ERROR_CTX_SESSION_IN_USE (2763): Indicates an attempt to terminate a session that is currently in use by another user or application.
• ERROR_CTX_CLIENT_DISCONNECTED (2759): Occurs when the client has disconnected from the remote control session before it can be terminated.

FAQ

Q: What does the ERROR_CTX_SHADOW_NOT_RUNNING error mean?

A: This error indicates that an attempt was made to terminate a remote control session that is not currently active or being remotely controlled.

Q: How can I prevent this error from occurring?

A: Ensure that you correctly identify and manage the state of remote control sessions before attempting to terminate them. Validate all parameters and ensure they accurately reflect the intended session.

Summary

The ERROR_CTX_SHADOW_NOT_RUNNING is a specific capability error indicating an attempt to terminate a non-existent or improperly identified remote control session. Developers should carefully manage session states and validate input parameters to avoid this error.