If NLog Trace is not writing to Azure logs, there could be several reasons for this behavior. Here are some common troubleshooting steps to identify and resolve the issue:

  1. Configuration Error: Verify that the NLog configuration is set up correctly to write logs to Azure. Check if you have the Azure target properly configured in your NLog configuration file.

  2. Azure Storage Account: Ensure that you have a valid Azure Storage Account set up to store the logs. Double-check the connection string and credentials for the storage account.

  3. Azure Target Parameters: Ensure that you have specified the correct container and blob name for the Azure target. These parameters determine where the logs will be stored in Azure storage.

  4. Logging Level: Check the logging level in your NLog configuration. If you have set the logging level to a higher value, lower-level log messages might not be written to Azure.

  5. Internal Log: Enable NLog's internal logging to get more information about what's happening. Add the following to your application's startup code:

    NLog.Common.InternalLogger.LogToConsole = true; NLog.Common.InternalLogger.LogLevel = LogLevel.Debug;

    This will output NLog's internal log messages to the console.

  6. Permission Issues: Ensure that the application has the necessary permissions to write logs to the Azure Storage Account. If the credentials or permissions are incorrect, the logs won't be written.

  7. Blob Container Accessibility: Verify that the Azure Blob Container is public or has the appropriate access control settings to allow writing logs.

  8. Azure SDK Version: Ensure that you are using a compatible version of the Azure SDK with the NLog Azure target.

  9. Check for Errors: Monitor the application for any error messages or exceptions related to logging. Use try-catch blocks around logging code to capture any exceptions that might be occurring during logging.

  10. Test Locally: If possible, test logging to Azure storage locally or in a test environment to verify that the issue is not related to the Azure environment itself.

  11. Update NLog: Ensure that you are using the latest version of NLog and Azure target. There might be bug fixes or improvements in newer versions.

By following these troubleshooting steps, you should be able to identify the issue preventing NLog Trace from writing to Azure logs and resolve the problem accordingly.

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