Windows PowerShell command on Get-command Get-WindowsUpdateLog

NAME

Get-WindowsUpdateLog

SYNOPSIS

Merges Windows Update .etl files into a single log file.

SYNTAX

Get-WindowsUpdateLog [[-ETLPath] ] [[-LogPath] ] [[-SymbolServer] ] [-ForceFlush]

[-InformationAction {SilentlyContinue | Stop | Continue | Inquire | Ignore | Suspend}] [-InformationVariable

] [-ProcessingType {CSV | XML}] [-Confirm] [-WhatIf] []

DESCRIPTION

The Get-WindowsUpdateLog cmdlet merges and converts Windows Update .etl files into a single readable

WindowsUpdate.log file. Windows Update Agent uses Event Tracing for Windows (ETW) to generate diagnostic logs. Windows Update no longer directly produces a WindowsUpdate.log file. Instead, it produces .etl files that are not immediately readable as written. This cmdlet requires access to a Microsoft symbol server.

PARAMETERS

-ETLPath []

Specifies an array of paths of Windows Update .etl files to convert into WindowsUpdate.log. The default value for this parameter is the Windows Update trace file directory for the current device. The acceptable values for this parameter are:

-- The full path of a directory that contains one or more .etl files.

-- The full path of a single .etl file.

-- A comma-separated list of full paths of .etl files.

Required? false Position? 1 Default value none

Accept pipeline input? true(ByValue,ByPropertyName)

Accept wildcard characters? false

-ForceFlush []

Indicates that this cmdlet forces the Windows Update Agent on the current device to flush all of its traces to .etl files. This process stops the Update Orchestrator and Windows Update services. Running this cmdlet with this parameter requires administrative credentials. You can start Windows PowerShell with administrative credentials by using the Run as administrator command. Required? false Position? named Default value none Accept pipeline input? false Accept wildcard characters? false

-InformationAction []

Specifies how this cmdlet responds to an information event. The acceptable values for this parameter are:

-- SilentlyContinue

-- Stop

-- Continue

-- Inquire

-- Ignore

-- Suspend

Required? false Position? named Default value none Accept pipeline input? false Accept wildcard characters? false

-InformationVariable []

Specifies a variable in which to store an information event message. Required? false Position? named Default value none Accept pipeline input? false Accept wildcard characters? false

-LogPath []

Specifies the full path to which Get-WindowsUpdateLog writes WindowsUpdate.log. The default value is

WindowsUpdate.log in the Desktop folder of the current user. Required? false Position? 2 Default value none Accept pipeline input? false Accept wildcard characters? false

-ProcessingType []

Specifies the file type that Get-WindowsUpdateLog uses for temporary files that are created during

intermediate processing. The acceptable values for this parameter are:

-- CSV (comma-separated values)

-- XML

By default, the value is CSV. The temporary files are in $env:TEMP\WindowsUpdateLog.

Required? false Position? named Default value none Accept pipeline input? false Accept wildcard characters? false

-SymbolServer []

Specifies the URL of Microsoft Symbol Server. By default, this value is the Microsoft public symbol server. Required? false Position? 3 Default value none Accept pipeline input? false Accept wildcard characters? false

-Confirm []

Prompts you for confirmation before running the cmdlet.Prompts you for confirmation before running the cmdlet. Required? false Position? named Default value false Accept pipeline input? false Accept wildcard characters? false

-WhatIf []

Shows what would happen if the cmdlet runs. The cmdlet is not run.Shows what would happen if the cmdlet runs. The cmdlet is not run. Required? false Position? named Default value false Accept pipeline input? false Accept wildcard characters? false This cmdlet supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, WarningVariable, OutBuffer, PipelineVariable, and OutVariable. For more information, see about_CommonParameters (https:/go.microsoft.com/fwlink/?LinkID=113216).

INPUTS

OUTPUTS

Example 1: Merge and convert Windows Update trace files

PS C:\>Get-WindowsUpdateLog

Converting C:\Windows\logs\WindowsUpdate into C:\Users\Admin\Desktop\WindowsUpdate.log Directory: C:\Users\admin\AppData\Local\Temp\WindowsUpdateLog

Mode LastWriteTime Length Name

---- ------------- ------ ----

d----- 5/30/2015 10:02 PM SymCache

Input

----------------

File(s): C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.112451.395.1.etl C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.112502.723.1.etl C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.112524.191.1.etl C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.121921.075.1.etl C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.122031.684.1.etl C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.122432.434.1.etl C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.122432.434.2.etl C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.122432.434.3.etl C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.122432.434.4.etl C:\Windows\logs\WindowsUpdate\WindowsUpdate.20150529.122432.434.5.etl

0.00%8.33%16.67%25.00%33.33%41.67%50.00%58.33%66.67%75.00%83.33%91.67%100.00%

Output

----------------

DumpFile: C:\Users\admin\AppData\Local\Temp\WindowsUpdateLog\wuetl.CSV.tmp.0 The command completed successfully. WindowsUpdate.log written to C:\Users\admin\Desktop\WindowsUpdate.log This command merges and converts Windows Update trace files (.etl files) into a single readable WindowsUpdate.log file.