![]() See the example ETW capture at the bottom of this article for an example of the command output. ![]() To convert the output file to text format: netsh trace convert c:\tmp\wireless.etl Stop the trace by entering the following command: netsh trace stop If intermittent connection drops trigger stop command on a script (ping or test network constantly until fail, then netsh trace stop).If the issue is intermittent but rare, netsh trace stop command needs to be triggered automatically (or at least alerted to admin quickly) to ensure trace doesn’t overwrite the repro data.Record the time of each connection attempt, and whether it was a success or failure. If it's intermittent but easily reproducible, try to manually connect until it fails.If there's a failure to establish connection, try to manually connect.Enter the following command at an elevated command prompt: netsh trace start wireless_dbg capture=yes overwrite=yes maxsize=4096 tracefile=c:\tmp\wireless.etl Windows 7 SP1 and Windows Server 2008 R2 SP1.Windows 10 version 1607 and Windows Server 2016.To verify the update status, refer to the appropriate update-history webpage for your system: ![]() ![]() Make sure that you install the latest Windows updates, cumulative updates, and rollup updates. The intention of this troubleshooter is to show how to find a starting point in the verbosity of wireless_dbg ETW and home in on the responsible components that are causing the connection problem. It's important to understand the different Wi-Fi components involved, their expected behaviors, and how the problem scenario deviates from those expected behaviors. Instead it will flood the screen with meaningless logs that will obfuscate the context of the actual problem. Searching for or filtering on "err", "error", and "fail" will seldom lead you to the root cause of a problematic Wi-Fi scenario. Wireless ETW is incredibly verbose and calls out many innocuous errors (rather flagged behaviors that have little or nothing to do with the problem scenario). It's not meant to be representative of every wireless problem scenario. This troubleshooter uses examples that demonstrate a general strategy for navigating and interpreting wireless component Event Tracing for Windows (ETW).
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