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Get-ADComputer

Updated: July 8, 2014

Applies To: Windows 8.1, Windows PowerShell 4.0, Windows Server 2012 R2

Get-ADComputer

Gets one or more Active Directory computers.

Syntax

Parameter Set: Filter
Get-ADComputer -Filter <String> [-AuthType <ADAuthType> {Negotiate | Basic} ] [-Credential <PSCredential> ] [-Properties <String[]> ] [-ResultPageSize <Int32> ] [-ResultSetSize <Int32> ] [-SearchBase <String> ] [-SearchScope <ADSearchScope> {Base | OneLevel | Subtree} ] [-Server <String> ] [ <CommonParameters>]

Parameter Set: Identity
Get-ADComputer [-Identity] <ADComputer> [-AuthType <ADAuthType> {Negotiate | Basic} ] [-Credential <PSCredential> ] [-Partition <String> ] [-Properties <String[]> ] [-Server <String> ] [ <CommonParameters>]

Parameter Set: LdapFilter
Get-ADComputer -LDAPFilter <String> [-AuthType <ADAuthType> {Negotiate | Basic} ] [-Credential <PSCredential> ] [-Properties <String[]> ] [-ResultPageSize <Int32> ] [-ResultSetSize <Int32> ] [-SearchBase <String> ] [-SearchScope <ADSearchScope> {Base | OneLevel | Subtree} ] [-Server <String> ] [ <CommonParameters>]




Detailed Description

The Get-ADComputer cmdlet gets a computer or performs a search to retrieve multiple computers.

The Identity parameter specifies the Active Directory computer to retrieve. You can identify a computer by its distinguished name (DN), GUID, security identifier (SID) or Security Accounts Manager (SAM) account name. You can also set the parameter to a computer object variable, such as $<localComputerObject> or pass a computer object through the pipeline to the Identity parameter.

To search for and retrieve more than one computer, use the Filter or LDAPFilter parameters. The Filter parameter uses the PowerShell Expression Language to write query strings for Active Directory. PowerShell Expression Language syntax provides rich type conversion support for value types received by the Filter parameter. For more information about the Filter parameter syntax, type Get-Help about_ActiveDirectory_Filter. If you have existing LDAP query strings, you can use the LDAPFilter parameter.

This cmdlet retrieves a default set of computer object properties. To retrieve additional properties use the Properties parameter. For more information about the how to determine the properties for computer objects, see the Properties parameter description.

Parameters

-AuthType<ADAuthType>

Specifies the authentication method to use. The acceptable values for this parameter are: 

-- Negotiate or 0
-- Basic or 1

The default authentication method is Negotiate.

A Secure Sockets Layer (SSL) connection is required for the Basic authentication method.


Aliases

none

Required?

false

Position?

named

Default Value

Microsoft.ActiveDirectory.Management.AuthType.Negotiate

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Credential<PSCredential>

Specifies the user account credentials to use to perform this task. The default credentials are the credentials of the currently logged on user unless the cmdlet is run from an Active Directory PowerShell provider drive. If the cmdlet is run from such a provider drive, the account associated with the drive is the default.

To specify this parameter, you can type a user name, such as User1 or Domain01\User01 or you can specify a PSCredential object. If you specify a user name for this parameter, the cmdlet prompts for a password.

You can also create a PSCredential object by using a script or by using the Get-Credential cmdlet. You can then set the Credential parameter to the PSCredential object.

If the acting credentials do not have directory-level permission to perform the task, Active Directory PowerShell returns a terminating error.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Filter<String>

Specifies a query string that retrieves Active Directory objects. This string uses the PowerShell Expression Language syntax. The PowerShell Expression Language syntax provides rich type-conversion support for value types received by the Filter parameter. The syntax uses an in-order representation, which means that the operator is placed between the operand and the value. For more information about the Filter parameter, type Get-Help about_ActiveDirectory_Filter.

Syntax:

The following syntax uses Backus-Naur form to show how to use the PowerShell Expression Language for this parameter.

<filter> ::= "{" <FilterComponentList> "}"

<FilterComponentList> ::= <FilterComponent> | <FilterComponent> <JoinOperator> <FilterComponent> | <NotOperator> <FilterComponent>

<FilterComponent> ::= <attr> <FilterOperator> <value> | "(" <FilterComponent> ")"

<FilterOperator> ::= "-eq" | "-le" | "-ge" | "-ne" | "-lt" | "-gt"| "-approx" | "-bor" | "-band" | "-recursivematch" | "-like" | "-notlike"

<JoinOperator> ::= "-and" | "-or"

<NotOperator> ::= "-not"

<attr> ::= <PropertyName> | <LDAPDisplayName of the attribute>

<value>::= <compare this value with an <attr> by using the specified <FilterOperator>>

For a list of supported types for <value>, type Get-Help about_ActiveDirectory_ObjectModel.

Note: PowerShell wildcards other than *, such as ?, are not supported by the Filter syntax.

Note: To query using LDAP query strings, use the LDAPFilter parameter.


Aliases

none

Required?

true

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Identity<ADComputer>

Specifies an Active Directory computer object by providing one of the following property values. The identifier in parentheses is the LDAP display name for the attribute. The acceptable values for this parameter are: 

-- A Distinguished Name
-- A GUID (objectGUID)
-- A Security Identifier (objectSid)
-- A Security Accounts Manager Account Name (sAMAccountName)

The cmdlet searches the default naming context or partition to find the object. If the identifier given is a DN, the partition to search will be computed from that DN. If two or more objects are found, the cmdlet returns a non-terminating error.

This parameter can also get this object through the pipeline or you can set this parameter to a computer object instance.


Aliases

none

Required?

true

Position?

1

Default Value

none

Accept Pipeline Input?

True (ByValue)

Accept Wildcard Characters?

false

-LDAPFilter<String>

Specifies an LDAP query string that is used to filter Active Directory objects. You can use this parameter to run your existing LDAP queries. The Filter parameter syntax supports the same functionality as the LDAP syntax. For more information, see the Filter parameter description or type Get-Help about_ActiveDirectory_Filter.


Aliases

none

Required?

true

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Partition<String>

Specifies the distinguished name of an Active Directory partition. The distinguished name must be one of the naming contexts on the current directory server. The cmdlet searches this partition to find the object defined by the Identity parameter.

In many cases, a default value will be used for the Partition parameter if no value is specified. The rules for determining the default value are given below. Note that rules listed first are evaluated first and once a default value can be determined, no further rules will be evaluated.

In AD DS environments, a default value for Partition will be set in the following cases:

-- If the Identity parameter is set to a distinguished name, the default value of Partition is automatically generated from this distinguished name.
-- If running cmdlets from an Active Directory provider drive, the default value of Partition is automatically generated from the current path in the drive.
-- If none of the previous cases apply, the default value of Partition will be set to the default partition or naming context of the target domain.

In AD LDS environments, a default value for Partition will be set in the following cases:

-- If the Identity parameter is set to a distinguished name, the default value of Partition is automatically generated from this distinguished name.
-- If running cmdlets from an Active Directory provider drive, the default value of Partition is automatically generated from the current path in the drive.
-- If the target AD LDS instance has a default naming context, the default value of Partition will be set to the default naming context. To specify a default naming context for an AD LDS environment, set the msDS-defaultNamingContext property of the Active Directory directory service agent (DSA) object (nTDSDSA) for the AD LDS instance.
-- If none of the previous cases apply, the Partition parameter will not take any default value.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Properties<String[]>

Specifies the properties of the output object to retrieve from the server. Use this parameter to retrieve properties that are not included in the default set.

Specify properties for this parameter as a comma-separated list of names. To display all of the attributes that are set on the object, specify * (asterisk).

To specify an individual extended property, use the name of the property. For properties that are not default or extended properties, you must specify the LDAP display name of the attribute.

To retrieve properties and display them for an object, you can use the Get-* cmdlet associated with the object and pass the output to the Get-Member cmdlet.


Aliases

Property

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-ResultPageSize<Int32>

Specifies the number of objects to include in one page for an Active Directory Domain Services query.

The default is 256 objects per page.


Aliases

none

Required?

false

Position?

named

Default Value

256

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-ResultSetSize<Int32>

Specifies the maximum number of objects to return for an Active Directory Domain Services query. If you want to receive all of the objects, set this parameter to $Null (null value). You can use Ctrl+C to stop the query and return of objects.

The default is $Null.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-SearchBase<String>

Specifies an Active Directory path to search under.

When you run a cmdlet from an Active Directory provider drive, the default value of this parameter is the current path of the drive.

When you run a cmdlet outside of an Active Directory provider drive against an AD DS target, the default value of this parameter is the default naming context of the target domain.

When you run a cmdlet outside of an Active Directory provider drive against an AD LDS target, the default value is the default naming context of the target LDS instance if one has been specified by setting the msDS-defaultNamingContext property of the Active Directory directory service agent (DSA) object (nTDSDSA) for the AD LDS instance. If no default naming context has been specified for the target AD LDS instance, then this parameter has no default value.

When the value of the SearchBase parameter is set to an empty string and you are connected to a GC port, all partitions will be searched. If the value of the SearchBase parameter is set to an empty string and you are not connected to a GC port, an error will be thrown.


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-SearchScope<ADSearchScope>

Specifies the scope of an Active Directory search. The acceptable values for this parameter are: 

-- Base or 0
-- OneLevel or 1
-- Subtree or 2

A Base query searches only the current path or object. A OneLevel query searches the immediate children of that path or object. A Subtree query searches the current path or object and all children of that path or object.


Aliases

none

Required?

false

Position?

named

Default Value

Subtree

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

-Server<String>

Specifies the Active Directory Domain Services instance to connect to, by providing one of the following values for a corresponding domain name or directory server. The service may be any of the following: Active Directory Lightweight Domain Services, Active Directory Domain Services or Active Directory Snapshot instance.

Specify the Active Directory Domain Services instance in one of the following ways:

-- Domain name values:

---- Fully qualified domain name
---- NetBIOS name

-- Directory server values:

---- Fully qualified directory server name
---- NetBIOS name
---- Fully qualified directory server name and port

The default value for this parameter is determined by one of the following methods in the order that they are listed:

-- By using the Server value from objects passed through the pipeline
-- By using the server information associated with the Active Directory Domain ServicesWindows PowerShell provider drive, when the cmdlet runs in that drive
-- By using the domain of the computer running Windows PowerShell


Aliases

none

Required?

false

Position?

named

Default Value

none

Accept Pipeline Input?

false

Accept Wildcard Characters?

false

<CommonParameters>

This cmdlet supports the common parameters: -Verbose, -Debug, -ErrorAction, -ErrorVariable, -OutBuffer, and -OutVariable. For more information, see    about_CommonParameters.

Inputs

The input type is the type of the objects that you can pipe to the cmdlet.

  • None or Microsoft.ActiveDirectory.Management.ADComputer

    A computer object is received by the Identity parameter.


Outputs

The output type is the type of the objects that the cmdlet emits.

  • Microsoft.ActiveDirectory.Management.ADComputer

    Returns one or more computer objects.

    This Get-ADComputer cmdlet returns a default set of ADComputer property values. To retrieve additional ADComputer properties, use the Properties parameter of this cmdlet.

    To view the properties for an ADComputer object, see the following examples. To run these examples, replace <computer> with a computer identifier such as the SAM account name of your local computer.

    To get a list of the default set of properties of an ADComputer object, use the following command:

    Get-ADComputer <computer> | Get-Member

    To get a list of all the properties of an ADComputer object, use the following command:

    Get-ADComputer <computer> -Properties ALL | Get-Member


Notes

  • This cmdlet does not work with AD LDS with its default schema. By default AD LDS schema does not have a computer class, but if the schema is extended to include it, this cmdlet will work with LDS.

Examples

-------------------------- EXAMPLE 1 --------------------------

This command gets a specific computer showing all the properties.


PS C:\> Get-ADComputer -Identity "Fabrikam-SRV1" -Properties *
              

AccountExpirationDate :
accountExpires : 9223372036854775807
AccountLockoutTime :
AccountNotDelegated : False
AllowReversiblePasswordEncryption : False
BadLogonCount :
CannotChangePassword : False
CanonicalName :
Fabrikam.com/Computers/fabrikam-srv1
Certificates : {}
CN : fabrikam-srv1
codePage : 0
countryCode : 0
Created : 3/16/2009 4:15:00 PM
createTimeStamp : 3/16/2009 4:15:00 PM
Deleted :
Description : DisplayName :
DistinguishedName : CN=fabrikam-srv1,CN=Computers,DC=Fabrikam, DC=com
DNSHostName : DoesNotRequirePreAuth : False
dSCorePropagationData : {3/16/2009 4:21:51 PM, 12/31/1600 4:00:01
PM}
Enabled : True
HomedirRequired : False
HomePage : instanceType : 0
IPv4Address :
IPv6Address : isCriticalSystemObject : False
isDeleted :
LastBadPasswordAttempt :
LastKnownParent :
LastLogonDate :
localPolicyFlags : 0
Location : NA/HQ/Building A
LockedOut : False
ManagedBy : CN=SQL Administrator 01,OU=UserAccounts,OU
=Managed,DC=Fabrikam,DC=com
MemberOf : {}
MNSLogonAccount : False
Modified : 3/16/2009 4:23:01 PM
modifyTimeStamp : 3/16/2009 4:23:01 PM
msDS-User-Account-Control-Computed : 0
Name : fabrikam-srv1
nTSecurityDescriptor : System.DirectoryServices.ActiveDirectorySe
curity
ObjectCategory : CN=Computer,CN=Schema,CN=Configuration,DC=
Fabrikam,DC=com
ObjectClass : computer
ObjectGUID : 828306a3-8ccd-410e-9537-e6616662c0b0
objectSid : S-1-5-21-41432690-3719764436-1984117282-11
30
OperatingSystem :
OperatingSystemHotfix :
OperatingSystemServicePack :
OperatingSystemVersion :
PasswordExpired : False
PasswordLastSet :
PasswordNeverExpires : False
PasswordNotRequired : False
PrimaryGroup : CN=Domain Computers,CN=Users,DC=Fabrikam,D
C=com
primaryGroupID : 515
ProtectedFromAccidentalDeletion : False
pwdLastSet : 0
SamAccountName : fabrikam-srv1$
sAMAccountType : 805306369
sDRightsEffective : 0
ServiceAccount : {}
servicePrincipalName : {MSOLAPSVC.3/FABRIKAM-SRV1.FABRIKAM.COM:an
alyze, MSSQLSVC/FABRIKAM-SRV1.FABRIKAM.COM
:1456}
ServicePrincipalNames : {MSOLAPSVC.3/FABRIKAM-SRV1.FABRIKAM.COM:an
alyze, MSSQLSVC/FABRIKAM-SRV1.FABRIKAM.COM
:1456}
SID : S-1-5-21-41432690-3719764436-1984117282-11
30
SIDHistory : {}
TrustedForDelegation : False
TrustedToAuthForDelegation : False
UseDESKeyOnly : False
userAccountControl : 4096
userCertificate : {}
UserPrincipalName : uSNChanged : 36024
uSNCreated : 35966
whenChanged : 3/16/2009 4:23:01 PM
whenCreated : 3/16/2009 4:15:00 PM

-------------------------- EXAMPLE 2 --------------------------

This command gets all the computers with a name starting by a particular string and showing the name, dns hostname and IPv4 address.


PS C:\> Get-ADComputer -Filter 'Name -like "Fabrikam*"' -Properties IPv4Address | FT Name,DNSHostName,IPv4Address -A
name          dnshostname                ipv4address
---- ----------- -----------
FABRIKAM-SRV1 FABRIKAM-SRV1.Fabrikam.com 10.194.99.181
FABRIKAM-SRV2 FABRIKAM-SRV2.Fabrikam.com 10.194.100.3

-------------------------- EXAMPLE 3 --------------------------

This example gets all the computers that have changed their password in the last 90 days.


PS C:\> $d = [DateTime]::Today.AddDays(-90) 
PS C:\> Get-ADComputer -Filter 'PasswordLastSet -ge $d' -Properties PasswordLastSet | FT Name,PasswordLastSet
Name                                                        PasswordLastSet
---- ---------------
FABRIKAM-SRV4 3/12/2009 6:40:37 PM
FABRIKAM-SRV5 3/12/2009 7:05:45 PM

-------------------------- EXAMPLE 4 --------------------------

This command gets the computer accounts in the location CN=Computers,DC=Fabrikam,DC=com that are listed as laptops by using an LDAPFilter.


PS C:\> Get-ADComputer -LDAPFilter "(name=*laptop*)" -SearchBase "CN=Computers,DC=Fabrikam,DC=com"
name
----
saradavi-laptop
jeffpr-laptop

-------------------------- EXAMPLE 5 --------------------------

This command gets all computer accounts.


PS C:\> Get-ADComputer -Filter *

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