ERROR_EVT_CHANNEL_CANNOT_ACTIVATE - 15025 (0x3AB1)
The channel fails to activate.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_EVT_CHANNEL_CANNOT_ACTIVATE error code indicates that a channel, which is part of the Event Tracing for Windows (ETW) framework, failed to activate. This typically means that the system encountered an issue during the initialization or configuration process of the channel.
Error Details
This error can occur in various scenarios where ETW channels are being managed and activated. Channels in this context refer to logical units within the ETW infrastructure used for collecting event data. The activation failure could be due to a variety of reasons, such as incorrect parameters, insufficient resources, or issues with the channel configuration.
Usage Context
The ERROR_EVT_CHANNEL_CANNOT_ACTIVATE error is commonly encountered when working with ETW channels in Windows environments. It can appear during the initialization of tracing sessions, where the system attempts to activate a specific channel for event collection. Developers and administrators should be aware that this error might indicate issues related to the configuration or state of the channel.
Developer Interpretation
When encountering ERROR_EVT_CHANNEL_CANNOT_ACTIVATE, developers should interpret it as an indication that the specified ETW channel failed to initialize properly. This could mean that there are problems with the parameters passed during activation, such as incorrect channel names or invalid configurations. Additionally, this error might suggest issues related to resource availability or system state.
Related Errors
ERROR_EVT_CHANNEL_NOT_FOUND(15024 - 0x3AB0): Indicates that a specified ETW channel could not be found.ERROR_EVT_FILTER_ALREADYSCOPED(15068 - 0x3C74): Suggests that an attempt was made to apply a filter in a context where it is already scoped.
FAQ
Q: What does the ERROR_EVT_CHANNEL_CANNOT_ACTIVATE error mean?
A: It indicates that a specified ETW channel failed to activate during initialization. This could be due to incorrect parameters, resource issues, or configuration problems.
Q: How can I troubleshoot this issue?
A: Review the activation parameters and ensure they are correct. Check for any resource constraints and verify the state of the channel configuration.
Summary
The ERROR_EVT_CHANNEL_CANNOT_ACTIVATE error code is a generic indication that an ETW channel failed to activate during initialization. Developers should focus on validating the parameters, ensuring proper resource availability, and confirming the correctness of the channel configuration when encountering this error.