Using XPath starts-with or contains functions to search Windows event logs
Windows Event Log supports a subset of XPath 1.0. It has only three functions: position
, Band
, timediff
.
Reference: https://docs.microsoft.com/en-us/windows/desktop/WES/consuming-events#xpath-10-limitations
If you don't mind two passes, you can always use a powershell script to re-filter the data as its -where
operator supports -like
, -match
, and -contains
:
nv.ps1
$Query = @" <QueryList> <Query Id="0" Path="System"> <Select Path="System"> *[System[(EventID=20001)]] </Select> </Query> </QueryList>"@$events = Get-WinEvent -FilterXml $QueryForEach ($Event in $Events) { # Convert the event to XML $eventXML = [xml]$Event.ToXml() Add-Member -InputObject $Event -MemberType NoteProperty -Force -Name DriverVersion -Value $eventXML.Event.UserData.InstallDeviceID.DriverVersion Add-Member -InputObject $Event -MemberType NoteProperty -Force -Name DriverDescription -Value $eventXML.Event.UserData.InstallDeviceID.DriverDescription Add-Member -InputObject $Event -MemberType NoteProperty -Force -Name Data -Value $eventXML.Event.EventData.Data}$Events | Select TimeCreated, Id, DriverDescription, DriverVersion, ProviderName, @{Name="MessageData";Expression={$_.Message + $_.Data}} | Where {$_.DriverDescription -match "NVIDIA GeForce GTX*"} | Out-GridViewpause
A cmd to launch it (nv.cmd):
powershell.exe -executionpolicy bypass "& '.\nv.ps1'"
A quick powershell to search for session* in data. Even if data were an array, this should work.
get-winevent application | where { $xml = [xml]$_.toxml() $xml.event.eventdata.data -like 'session*' } | select -first 3 ProviderName: Microsoft-Windows-WinlogonTimeCreated Id LevelDisplayName Message----------- -- ---------------- -------2/22/2020 11:05:30 AM 6000 Information The winlogon notification subscriber <SessionEnv> was unavailable to handle a notification event.2/22/2020 11:05:30 AM 6003 Information The winlogon notification subscriber <SessionEnv> was unavailable to handle a critical notification event.2/21/2020 6:28:38 PM 6000 Information The winlogon notification subscriber <SessionEnv> was unavailable to handle a notification event.$xml.event.eventdata.data # the last oneSessionEnv
If you don't need the precision, it's easier to match on the message, which the data fields often appear in.
get-winevent application | where message -match session