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ERROR_EVT_CHANNEL_CANNOT_ACTIVATE
The registered Event Log channel failed to activate
Activating a channel requires a valid registration, usable backing log, acceptable access descriptor and, for some channel types, an available ETW session. The channel may exist and its properties may be readable while activation still fails. This distinguishes the code from CHANNEL_NOT_FOUND and from an invalid channel path.
Inspect the channel configuration and the Event Log service administrative events generated at the same time. Check the configured log-file directory, permissions, maximum size and isolation settings, then verify the owning provider resources. Custom-isolation and Analytic or Debug channels consume separate ETW sessions, so widespread session exhaustion or a conflicting trace configuration can also be relevant.
What to inspect
- Read current channel properties before changing them.
- Check Event Log service diagnostics for the activation sub-error.
- Verify backing-log access and the provider installation.
References
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