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Server 2012 R2 Key Generator

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Applies To: Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows 8

Configures the server principal name for the host or service in Active Directory Domain Services (AD DS) and generates a .keytab file that contains the shared secret key of the service. The .keytab file is based on the Massachusetts Institute of Technology (MIT) implementation of the Kerberos authentication protocol. The Ktpass command-line tool allows non-Windows services that support Kerberos authentication to use the interoperability features provided by the Kerberos Key Distribution Center (KDC) service. This topic applies to the operating system versions designated in the Applies To list at the beginning of the topic.

For examples of how this command can be used, see Examples.

Syntax

Parameters

Parameter

Description

/out <FileName>

Specifies the name of the Kerberos version 5 .keytab file to generate.

Note

This is the .keytab file that you transfer to a computer that is not running the Windows operating system, and then replace or merge with your existing .keytab file, /Etc/Krb5.keytab.

/princ <PrincipalName>

Specifies the principal name in the form host/computer.contoso.com@CONTOSO.COM.

Warning

This parameter is case sensitive. See Remarks for more information.

/mapuser <UserAccount>

Maps the name of the Kerberos principal, which is specified by the princ parameter, to the specified domain account.

/mapop {add set}

Specifies how the mapping attribute is set.

  • Add adds the value of the specified local user name. This is the default.

  • Set sets the value for Data Encryption Standard (DES)-only encryption for the specified local user name.

{- +}desonly

DES-only encryption is set by default.

  • + Sets an account for DES-only encryption.

  • - Releases restriction on an account for DES-only encryption.

Important

Beginning with Windows 7 and Windows Server 2008 R2, Windows does not support DES by default.

/in <FileName>

Specifies the .keytab file to read from a host computer that is not running the Windows operating system.

/pass {Password * {- +}rndpass} /free-word-search-generator-with-answer-key.html.

Specifies a password for the principal user name that is specified by the princ parameter. Use '*' to prompt for a password.

/minpass

Sets the minimum length of the random password to 15 characters.

/maxpass

Sets the maximum length of the random password to 256 characters.

/crypto {DES-CBC-CRC DES-CBC-MD5 RC4-HMAC-NT AES256-SHA1 AES128-SHA1 All}

Specifies the keys that are generated in the keytab file:

  • DES-CBC-CRC is used for compatibility.

  • Allowing browser to generate key. DES-CBC-MD5 adheres more closely to the MIT implementation and is used for compatibility.

  • RC4-HMAC-NT employs 128-bit encryption.

  • AES256-SHA1 employs AES256-CTS-HMAC-SHA1-96 encryption.

  • AES128-SHA1 employs AES128-CTS-HMAC-SHA1-96 encryption.

  • All states that all supported cryptographic types can be used.

Note

The default settings are based on older MIT versions. Therefore, /crypto should always be specified.

/itercount

Specifies the iteration count that is used for AES encryption. The default is that itercount is ignored for non-AES encryption and set at 4,096 for AES encryption.

/ptype {KRB5_NT_PRINCIPAL KRB5_NT_SRV_INST KRB5_NT_SRV_HST}

Specifies the principal type.

  • KRB5_NT_PRINCIPAL is the general principal type (recommended).

  • KRB5_NT_SRV_INST is the user service instance.

  • KRB5_NT_SRV_HST is the host service instance.

/kvno <KeyVersionNum>

Specifies the key version number. The default value is 1.

/answer {- +}

Sets the background answer mode:

- Answers reset password prompts automatically with NO.

+ Answers reset password prompts automatically with YES.

/target

Sets which domain controller to use. The default is for the domain controller to be detected, based on the principal name. If the domain controller name does not resolve, a dialog box will prompt for a valid domain controller.

/rawsalt

Forces Ktpass to use the rawsalt algorithm when generating the key. This parameter is not needed.

{- +}dumpsalt

The output of this parameter shows the MIT salt algorithm that is being used to generate the key.

{- +}setupn

Sets the user principal name (UPN) in addition to the service principal name (SPN). The default is to set both in the .keytab file.

{- +}setpass <Password>

Sets the user's password when supplied. If rndpass is used, a random password is generated instead.

/? /h /help

Displays command-line Help for Ktpass.

Remarks

Services running on systems that are not running the Windows operating system can be configured with service instance accounts in Active Directory Domain Services. This allows any Kerberos client to authenticate to services that are not running the Windows operating system by using Windows KDCs.

The /princ parameter is not evaluated by Ktpass and is used as provided. There is no check to see if the parameter matches the exact case of the userPrincipalName attribute value when generating the Keytab file. Case sensitive Kerberos distributions using this Keytab file might have problems when there is no exact case match and could fail during pre-authentication. Check and retrieve the correct userPrincipalName attribute value from a LDIFDE export file. For example:

Examples

The following example illustrates how to create a Kerberos .keytab file, machine.keytab, in the current directory for the user Sample1. (You will merge this file with the Krb5.keytab file on a host computer that is not running the Windows operating system.) The Kerberos .keytab file will be created for all supported encryption types for the general principal type.

To generate a .keytab file for a host computer that is not running the Windows operating system, use the following steps to map the principal to the account and set the host principal password:

  1. Use the Active Directory User and Computers snap-in to create a user account for a service on a computer that is not running the Windows operating system. For example, create an account with the name Sample1.

  2. Use Ktpass to set up an identity mapping for the user account by typing the following at a command prompt:

    Note

    You cannot map multiple service instances to the same user account.

  3. Merge the .keytab file with the /Etc/Krb5.keytab file on a host computer that is not running the Windows operating system.

Additional references

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Applies to: Windows Server 2019, Windows Server Semi-Annual Channel, Windows Server 2016, Windows 10

Computers that are running volume licensed editions of Windows Server, Windows 10, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Server 2008 R2, Windows Vista, and Windows Server 2008 are, by default, KMS clients with no additional configuration needed.

Note

In the tables that follow, 'LTSC' stands for 'Long-Term Servicing Channel,' while 'LTSB' refers to the 'Long-Term Servicing Branch.'

To use the keys listed here (which are GVLKs), you must first have a KMS hostrunning in your deployment. If you haven't already configured a KMS host, seeDeploy KMS Activation for steps to set one up.

If you are converting a computer from a KMS host, MAK, or retail edition ofWindows to a KMS client, install the applicable setup key (GVLK) from thefollowing tables. To install a client setup key, open an administrative commandprompt on the client, type slmgr /ipk <setup key> and then press Enter.

If you want to……use these resources
Activate Windows outside of a volume-activation scenario (that is, you're trying to activate a retail version of Windows), these keys will not work.Use these links for retail versions of Windows:
Fix this error that you get when you try to activate a Windows 8.1, Windows Server 2012 R2 or newer system: “Error: 0xC004F050 The Software Licensing Service reported that the product key is invalid”…Install this update on the KMS host if it is running Windows 8.1, Windows Server 2012 R2, Windows 8, or Windows Server 2012.

If you are running Windows Server 2008 R2 or Windows 7, be on the lookoutfor an update to support using those as KMS hosts for Windows 10 clients.

Windows Server Semi-Annual Channel versions

Windows Server, version 1909, version 1903, and version 1809

Operating system editionKMS Client Setup Key
Windows Server Datacenter6NMRW-2C8FM-D24W7-TQWMY-CWH2D
Windows Server StandardN2KJX-J94YW-TQVFB-DG9YT-724CC

Windows Server LTSC/LTSB versions

Windows Server 2019

Operating system editionKMS Client Setup Key
Windows Server 2019 DatacenterWMDGN-G9PQG-XVVXX-R3X43-63DFG
Windows Server 2019 StandardN69G4-B89J2-4G8F4-WWYCC-J464C
Windows Server 2019 EssentialsWVDHN-86M7X-466P6-VHXV7-YY726

Windows Server 2016

Operating system editionKMS Client Setup Key
Windows Server 2016 DatacenterCB7KF-BWN84-R7R2Y-793K2-8XDDG
Windows Server 2016 StandardWC2BQ-8NRM3-FDDYY-2BFGV-KHKQY
Windows Server 2016 EssentialsJCKRF-N37P4-C2D82-9YXRT-4M63B

Windows 10, all supported Semi-Annual Channel versions

See the Windows lifecycle fact sheet for information about supported versions and end of service dates.

Operating system editionKMS Client Setup Key
Windows 10 ProW269N-WFGWX-YVC9B-4J6C9-T83GX
Windows 10 Pro NMH37W-N47XK-V7XM9-C7227-GCQG9
Windows 10 Pro for WorkstationsNRG8B-VKK3Q-CXVCJ-9G2XF-6Q84J
Windows 10 Pro for Workstations N9FNHH-K3HBT-3W4TD-6383H-6XYWF
Windows 10 Pro Education6TP4R-GNPTD-KYYHQ-7B7DP-J447Y
Windows 10 Pro Education NYVWGF-BXNMC-HTQYQ-CPQ99-66QFC
Windows 10 EducationNW6C2-QMPVW-D7KKK-3GKT6-VCFB2
Windows 10 Education N2WH4N-8QGBV-H22JP-CT43Q-MDWWJ
Windows 10 EnterpriseNPPR9-FWDCX-D2C8J-H872K-2YT43
Windows 10 Enterprise NDPH2V-TTNVB-4X9Q3-TJR4H-KHJW4
Windows 10 Enterprise GYYVX9-NTFWV-6MDM3-9PT4T-4M68B
Windows 10 Enterprise G N44RPN-FTY23-9VTTB-MP9BX-T84FV

Windows 10 LTSC/LTSB versions

Windows 10 LTSC 2019

Operating system editionKMS Client Setup Key
Windows 10 Enterprise LTSC 2019M7XTQ-FN8P6-TTKYV-9D4CC-J462D
Windows 10 Enterprise N LTSC 201992NFX-8DJQP-P6BBQ-THF9C-7CG2H

Windows 10 LTSB 2016

Operating system editionKMS Client Setup Key
Windows 10 Enterprise LTSB 2016DCPHK-NFMTC-H88MJ-PFHPY-QJ4BJ
Windows 10 Enterprise N LTSB 2016QFFDN-GRT3P-VKWWX-X7T3R-8B639

Windows 10 LTSB 2015

Operating system editionKMS Client Setup Key
Windows 10 Enterprise 2015 LTSBWNMTR-4C88C-JK8YV-HQ7T2-76DF9
Windows 10 Enterprise 2015 LTSB N2F77B-TNFGY-69QQF-B8YKP-D69TJ

Earlier versions of Windows Server

Windows Server, version 1803

Operating system editionKMS Client Setup Key
Windows Server Datacenter2HXDN-KRXHB-GPYC7-YCKFJ-7FVDG
Windows Server StandardPTXN8-JFHJM-4WC78-MPCBR-9W4KR

Windows Server, version 1709

Operating system editionKMS Client Setup Key
Windows Server Datacenter6Y6KB-N82V8-D8CQV-23MJW-BWTG6
Windows Server StandardDPCNP-XQFKJ-BJF7R-FRC8D-GF6G4

Windows Server 2012 R2

Operating system editionKMS Client Setup Key
Windows Server 2012 R2 Server StandardD2N9P-3P6X9-2R39C-7RTCD-MDVJX
Windows Server 2012 R2 DatacenterW3GGN-FT8W3-Y4M27-J84CP-Q3VJ9
Windows Server 2012 R2 EssentialsKNC87-3J2TX-XB4WP-VCPJV-M4FWM

Windows Server 2012

Operating system editionKMS Client Setup Key
Windows Server 2012BN3D2-R7TKB-3YPBD-8DRP2-27GG4
Windows Server 2012 N8N2M2-HWPGY-7PGT9-HGDD8-GVGGY
Windows Server 2012 Single Language2WN2H-YGCQR-KFX6K-CD6TF-84YXQ
Windows Server 2012 Country Specific4K36P-JN4VD-GDC6V-KDT89-DYFKP
Windows Server 2012 Server StandardXC9B7-NBPP2-83J2H-RHMBY-92BT4
Windows Server 2012 MultiPoint StandardHM7DN-YVMH3-46JC3-XYTG7-CYQJJ
Windows Server 2012 MultiPoint PremiumXNH6W-2V9GX-RGJ4K-Y8X6F-QGJ2G
Windows Server 2012 Datacenter48HP8-DN98B-MYWDG-T2DCC-8W83P

Windows Server 2008 R2

Operating system editionKMS Client Setup Key
Windows Server 2008 R2 Web6TPJF-RBVHG-WBW2R-86QPH-6RTM4
Windows Server 2008 R2 HPC editionTT8MH-CG224-D3D7Q-498W2-9QCTX
Windows Server 2008 R2 StandardYC6KT-GKW9T-YTKYR-T4X34-R7VHC
Windows Server 2008 R2 Enterprise489J6-VHDMP-X63PK-3K798-CPX3Y
Windows Server 2008 R2 Datacenter74YFP-3QFB3-KQT8W-PMXWJ-7M648
Windows Server 2008 R2 for Itanium-based SystemsGT63C-RJFQ3-4GMB6-BRFB9-CB83V

Windows Server 2008

Operating system editionKMS Client Setup Key
Windows Web Server 2008WYR28-R7TFJ-3X2YQ-YCY4H-M249D
Windows Server 2008 StandardTM24T-X9RMF-VWXK6-X8JC9-BFGM2
Windows Server 2008 Standard without Hyper-VW7VD6-7JFBR-RX26B-YKQ3Y-6FFFJ
Windows Server 2008 EnterpriseYQGMW-MPWTJ-34KDK-48M3W-X4Q6V
Windows Server 2008 Enterprise without Hyper-V39BXF-X8Q23-P2WWT-38T2F-G3FPG
Windows Server 2008 HPCRCTX3-KWVHP-BR6TB-RB6DM-6X7HP
Windows Server 2008 Datacenter7M67G-PC374-GR742-YH8V4-TCBY3
Windows Server 2008 Datacenter without Hyper-V22XQ2-VRXRG-P8D42-K34TD-G3QQC
Windows Server 2008 for Itanium-Based Systems4DWFP-JF3DJ-B7DTH-78FJB-PDRHK

Earlier versions of Windows

Windows 8.1

Operating system editionKMS Client Setup Key
Windows 8.1 ProGCRJD-8NW9H-F2CDX-CCM8D-9D6T9
Windows 8.1 Pro NHMCNV-VVBFX-7HMBH-CTY9B-B4FXY
Windows 8.1 EnterpriseMHF9N-XY6XB-WVXMC-BTDCT-MKKG7
Windows 8.1 Enterprise NTT4HM-HN7YT-62K67-RGRQJ-JFFXW

Windows Server 2012 R2 Key Generator

Windows 8

Operating system editionKMS Client Setup Key
Windows 8 ProNG4HW-VH26C-733KW-K6F98-J8CK4
Windows 8 Pro NXCVCF-2NXM9-723PB-MHCB7-2RYQQ
Windows 8 Enterprise32JNW-9KQ84-P47T8-D8GGY-CWCK7
Windows 8 Enterprise NJMNMF-RHW7P-DMY6X-RF3DR-X2BQT

Windows 7

Windows Server 2012 Key Generator

Operating system editionKMS Client Setup Key
Windows 7 ProfessionalFJ82H-XT6CR-J8D7P-XQJJ2-GPDD4
Windows 7 Professional NMRPKT-YTG23-K7D7T-X2JMM-QY7MG
Windows 7 Professional EW82YF-2Q76Y-63HXB-FGJG9-GF7QX
Windows 7 Enterprise33PXH-7Y6KF-2VJC9-XBBR8-HVTHH
Windows 7 Enterprise NYDRBP-3D83W-TY26F-D46B2-XCKRJ
Windows 7 Enterprise EC29WB-22CC8-VJ326-GHFJW-H9DH4

See also

Server 2012 R2 Download

• Plan for Volume Activation