![]() ![]() WPR also supports the old syntax for backward compatibility. The main difference is that the current version of WPR has a simplified command line syntax. If the command doesn’t yield an invalid command error but you see the different boottrace syntax text, then the autologger is supported on the version of WPR. You can check using the command : wpr -help boottrace WPR began supporting the autologger more than a few years ago(2017) but you may have an older WPR which does not support the autologger. Let us find out how to start and stop the autologger trace session using WPR. By having always on trace, you can snap the trace when something interesting happens. The autologger is a convenient way to start “always-on” trace, logging to a small circular buffer. The application of the autologger is not limited to boot time investigation. ![]() Because setting those registry keys and values are cumbersome, most tracing tools support setting up the autologger thru the command line. Windows provides a way to start the trace session at an early stage of boot process through the registry setting. It is important for Software Engineers to investigate how their drivers and apps are operating during the boot. An autologger (boot trace) is a trace session that starts automatically at system boot. ![]()
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