ERROR_EVT_CANNOT_OPEN_CHANNEL_OF_QUERY - 15036 (0x3ABC)
The channel at index %1!d! of the query can't be opened.
Updated: Feb 21, 2026
Technical Meaning
This error code indicates that an attempt to open a specific channel within an event query has failed. The failure is indexed by the value provided in the first parameter, which typically represents the position of the channel within the query.
Error Details
The error message The channel at index %1!d! of the query can't be opened. suggests that there might be a problem with the specified channel or its configuration. This could arise from various factors such as invalid parameters, unsupported operations, or issues related to resource limits.
Common Causes
- Invalid Parameter Values: The index provided for the channel is out of bounds or does not correspond to any valid channel in the query.
- Incorrect Object Type: The operation attempted on a non-channel object was expected to be performed on a channel.
- Exceeding Limits: There might be a limit on the number of channels that can be opened simultaneously, and this error could indicate an attempt to exceed that limit.
Real-World Context
This error is commonly encountered in scenarios where event queries are used for monitoring or logging purposes. Event queries allow users to filter events based on specific criteria, and each channel within a query represents a particular aspect of the filtering logic.
Is This Error Critical?
The criticality of this error depends on the context in which it occurs. If the application relies heavily on event channels for its functionality, then encountering this error could be significant. However, if the application can continue to function without these specific channels, the impact might be minimal.
How to Diagnose
- Review Operation Context: Ensure that the operation context is correct and that the query being executed is valid.
- Validate Parameters: Check the index value provided for the channel to ensure it falls within the expected range.
- Confirm Object Types: Verify that the object types involved in the operation are appropriate for the intended action.
How to Resolve
- Correct Parameter Usage: Ensure that all parameters used in the event query are valid and correctly specified.
- Adjust Operation Context: If the context of the operation is incorrect, adjust it to align with the expected usage scenario.
- Restore Data: In cases where data corruption might be a factor, restore or correct any corrupted data.
Developer Notes
When working with event queries in Windows, developers should ensure that all parameters are validated and that operations are performed within the limits of supported functionality. Careful validation of input parameters can help prevent such errors from occurring.
Related Errors
- ERROR_EVT_QUERY_PARSE_FAILED: Indicates a failure to parse the query itself.
- ERROR_EVT_INVALID_CHANNEL_NAME: Suggests an invalid channel name was used in the query.
FAQ
Q: What does this error mean?
A: This error indicates that an attempt to open a specific channel within an event query has failed due to an invalid index or other issues.
Q: How can I prevent this error from occurring?
A: Validate all parameters used in the event query and ensure that the operation context is correct. Use appropriate validation logic for input data.
Summary
The ERROR_EVT_CANNOT_OPEN_CHANNEL_OF_QUERY (15036) error code signifies a failure to open a specific channel within an event query. This can be caused by invalid parameters, incorrect object types, or exceeding resource limits. By carefully validating inputs and ensuring correct operation context, developers can mitigate the occurrence of this error.