Stop-Process - PowerShell command help and examples

Stops one or more running processes. (Stop-Process)


NAME
Stop-Process
SYNOPSIS
Stops one or more running processes.
SYNTAX
Stop-Process [-Id] <Int32[]> [-Force] [-PassThru] [-Confirm] [-WhatIf] [<CommonParameters>] Stop-Process -InputObject <Process[]> [-Force] [-PassThru] [-Confirm] [-WhatIf] [<CommonParameters>] Stop-Process -Name <string[]> [-Force] [-PassThru] [-Confirm] [-WhatIf] [<CommonParameters>]
DESCRIPTION
The Stop-Process cmdlet stops one or more running processes. You can specify a process by process name or process ID (PID), or pass a process object to Stop-Process. Stop-Process works only on processes running on the local computer. On Windows Vista and later versions of Windows, to stop a process that is not owned by the current user, you must start Windows PowerShell with the "Run as administrator" option. Also, you are prompted for confirmation unless you use the Force parameter.
PARAMETERS
-Force [<SwitchParameter>] Stops the specified processes without prompting for confirmation. By default, Stop-Process prompts for confirmation before stopping any process that is not owned by the current user. To find the owner of a process, use the Get-WmiMethod cmdlet to get a Win32_Process object that represents the process, and then use the GetOwner method of the object. Required? false Position? named Default value False Accept pipeline input? false Accept wildcard characters? false -Id <Int32[]> Specifies the process IDs of the processes to be stopped. To specify multiple IDs, use commas to separate the IDs. To find the PID of a process, type "get-process". The parameter name ("Id") is optional. Required? true Position? 1 Default value Accept pipeline input? true (ByPropertyName) Accept wildcard characters? false -InputObject <Process[]> Stops the processes represented by the specified process objects. Enter a variable that contains the objects, or type a command or expression that gets the objects. Required? true Position? named Default value Accept pipeline input? true (ByValue) Accept wildcard characters? false -Name <string[]> Specifies the process names of the processes to be stopped. You can type multiple process names (separated by commas) or use wildcard characters. Required? true Position? named Default value Accept pipeline input? true (ByPropertyName) Accept wildcard characters? false -PassThru [<SwitchParameter>] Returns an object representing the process. By default, this cmdlet does not generate any output. Required? false Position? named Default value Accept pipeline input? false Accept wildcard characters? false -Confirm [<SwitchParameter>] Prompts you for confirmation before executing the command. Required? false Position? named Default value Accept pipeline input? false Accept wildcard characters? false -WhatIf [<SwitchParameter>] Describes what would happen if you executed the command without actually executing the command. Required? false Position? named Default value Accept pipeline input? false Accept wildcard characters? false <CommonParameters> This cmdlet supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, WarningVariable, OutBuffer and OutVariable. For more information, type, "get-help about_commonparameters".
INPUTS
System.Diagnostics.Process You can pipe a process object to Stop-Process.
OUTPUTS
None or System.Diagnostics.Process When you use the PassThru parameter, Stop-Process returns a System.Diagnostics.Process object that represents the stopped process. Otherwise, this cmdlet does not generate any output.
NOTES
You can also refer to Stop-Process by its built-in aliases, "kill" and "spps". For more information, see about_Aliases. You can also use the properties and methods of the Windows Management Instrumentation (WMI) Win32_Process object in Windows PowerShell. For more information, see Get-WmiObject and the WMI SDK. When stopping processes, be aware that stopping a process can stop process and services that depend on the process. In an extreme case, stopping a process can stop Windows.

Examples

EXAMPLE 1
C:\PS>stop-process -name notepad
Description
----------- This command stops all instances of the Notepad process on the computer. (Each instance of Notepad runs in its own process.) It uses the Name parameter to specify the processes, all of which have the same name. If you were to use the ID parameter to stop the same processes, you would have to list the process IDs of each instance of Notepad.
EXAMPLE 2
C:\PS>stop-process -id 3952 -confirm -passthru Confirm Are you sure you want to perform this action? Performing operation "Stop-Process" on Target "notepad (3952)". [Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is "Y"):y Handles NPM(K) PM(K) WS(K) VM(M) CPU(s) Id ProcessName ------- ------ ----- ----- ----- ------ -- ----------- 41 2 996 3212 31 3952 notepad
Description
----------- This command stops a particular instance of the Notepad process. It uses the process ID, 3952, to identify the process. The Confirm parameter directs Windows PowerShell to prompt the user before stopping the process. Because the prompt includes the process name, as well as its ID, this is best practice. The PassThru parameter passes the process object to the formatter for display. Without this parameter, there would be no display after a Stop-Process command.
EXAMPLE 3
C:\PS>calc c:\PS>$p = get-process calc c:\PS>stop-process -inputobject $p c:\PS>get-process | where-object {$_.HasExited}
Description
----------- This series of commands starts and stops the Calc process and then detects processes that have stopped. The first command ("calc") starts an instance of the calculator. The second command ("$p = get-process calc"), uses the Get-Process cmdlet to get an object representing the Calc process and store it in the $p variable. The third command ("stop-process -inputobject $p") uses the Stop-Process cmdlet to stop the Calc process. It uses the InputObject parameter to pass the object to Stop-Process. The last command gets all of the processes on the computer that were running but that are now stopped. It uses the Get-Process cmdlet to get all of the processes on the computer. The pipeline operator (|) passes the results to the Where-Object cmdlet, which selects the ones where the value of the HasExited property is TRUE. HasExited is just one property of process objects. To find all the properties, type "get-process | get-member".
EXAMPLE 4
C:\PS>get-process lsass | stop-process Stop-Process : Cannot stop process 'lsass (596)' because of the following error: Access is denied At line:1 char:34 + get-process lsass | stop-process <<<< [ADMIN]: C:\PS> get-process lsass | stop-process Warning! Are you sure you want to perform this action? Performing operation 'Stop-Process' on Target 'lsass(596)' [Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is "Y"): [ADMIN]: C:\PS> get-process lsass | stop-process -force [ADMIN]: C:\PS>
Description
----------- These commands show the effect of using the Force parameter to stop a process that is not owned by the user. The first command uses the Get-Process cmdlet to get the Lsass process. A pipeline operator sends the process to the Stop-Process cmdlet to stop it. As shown in the sample output, the first command fails with an "Access denied" message, because this process can be stopped only by a member of the Administrator's group on the computer. When Windows PowerShell is opened with the "Run as administrator" option, and the command is repeated, Windows PowerShell prompts you for confirmation. The second command uses the Force parameter to suppress the prompt. As a result, the process is stopped without confirmation. RELATED LINKS Online version: http://go.microsoft.com/fwlink/?LinkID=113412 Get-Process Start-Process Stop-Process Wait-Process Debug-Process C:\Windows>powershell get-help Wait-Process -full

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