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logging levels

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Logging levels in Windows development refer to the severity or verbosity of diagnostic messages emitted by applications and system components. On Windows, developers can use ETW (Event Tracing for Windows) providers and APIs like LoggingChannel in WinRT to add tracing to UWP apps. The Windows Device Portal's ETW Logging tool provides a live view of these events in a browser, helping developers debug issues. While Event Viewer shows system ETW events, Device Portal extends this capability to custom app logs. Understanding logging levels helps developers filter output by importance, such as error, warning, or informational messages, making troubleshooting more efficient.
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    Using Device Portal to view debug logs for UWP

    On Windows desktops, if something went wrong, your first instinct for years may have been to open up the Event Viewer and see if anything red or yellow shows up. Those alerts are saved ETW events, emitted by the system when errors occurred. On other Windows devices though, it’s been a bit harder...
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    • api debugging deployment device portal diagnostics etw event viewer guid hololens iot logging logging levels loggingchannel microsoft network logging rest api uwp windows 10 windows apps xbox
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