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The Microsoft Distributed Transaction Coordinator service must run under the NT AUTHORITY\NetworkService Windows account

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This article introduces the Windows account that Microsoft Distributed Transaction Coordinator (MSDTC) must run in Windows.

Important

This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, see: Windows registry information for advanced users.

Original product version:   Windows Server 2012, Windows 8, Windows 7
Original KB number:   903944

Summary

On all Windows Client and Server Operating Systems, you may have to restart the MSDTC service to perform these steps. To restart the MSDTC service, follow these steps:

  1. For Windows 8.1 and Windows 8

    • From the Start screen, swipe in from the right side to display the charms, select Search, and then search for cmd. (Or, if you are using a keyboard and mouse, type cmd at the Start screen.) In the search results, press-and-hold or right-click Command Prompt, and then select Run as Administrator.

    For Windows 7 and earlier versions

    • Press the Windows logo key+R, type cmd in the Run box, and then press Enter. Right-click cmd, and then select Run as Administrator.

  2. Type net stop msdtc , and then press the ENTER button.

  3. Type net start msdtc , and then press the ENTER button.

  4. Open the Component Services Microsoft Management Console (MMC) snap-in. To do this, click Start, and then click Run Type dcomcnfg.exe, and then click OK.

  5. Expand Component Services, expand Computers, and then expand My Computer.

  6. Right-click My Computer, and then click Properties.

  7. Click the MSDTC tab, and then click Security Configuration.

  8. Change the account in DCT Logon Account to NT AUTHORITY\NetworkService. If a password is needed, enter a blank password.

  9. Click OK two times.

For Windows XP and Windows Server 2003

Starting in Windows XP and then continuing in Windows Server 2003, the MSDTC service must run under the NT AUTHORITY\NetworkService Windows account.

If you change the account to an account other than the NetworkService account, the distributed transaction fails. The transaction fails because the MSDTC service cannot do mutual authentication together with other parties that are involved in the transaction. Local transactions that use the MSDTC service may also fail.

Note

Other parties can be transaction managers, resource manager, or clients.

In both Microsoft Windows NT 4.0 and Microsoft Windows 2000, you can change the default MSDTC service account to a domain account. You may change the account to perform Windows authentication when you are performing an XA recovery operation on an XA database such as an Oracle database.

However, in Windows Server 2003 and Windows XP, you cannot change the account. Instead, you must give the permissions and the roles that are required to perform an XA recovery operation to the NetworkService account on the computer where the MSDTC service is running.

The exact method of setting up an XA recovery operation is specific to each XA database. Typically, you have to add the computer account of the computer where the MSDTC service is running to the list of users who can perform an XA recovery operation on the XA database. Additionally, because the NetworkService account is a restricted account, you must provide the NetworkService account access to the folder where the XA DLL is located.

To change the account that the MSDTC service runs under back to the NetworkService account, follow these steps.

Warning

Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

  1. Click Start, click Run, type regedit, and then click OK.

  2. Locate and then click the following subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSDTC.

    If the following entries exist, go to step 6:

    • TurnOffRpcSecurity
    • AllowOnlySecureRpcCalls
    • FallbackToUnsecureRPCIfNecessary

  3. Create the TurnOffRpcSecurity entry:

    1. On the Edit menu, point to New, and then click DWORD Value.
    2. Type TurnOffRpcSecurity, and then press ENTER.

  4. Create the AllowOnlySecureRpcCalls entry:

    1. On the Edit menu, point to New, and then click DWORD Value.
    2. Type AllowOnlySecureRpcCalls, and then press ENTER.

  5. Create the FallbackToUnsecureRPCIfNecessary entry:

    1. On the Edit menu, point to New, and then click DWORD Value.
    2. Type FallbackToUnsecureRPCIfNecessary, and then press ENTER.

  6. Set the DWORD value for the TurnOffRpcSecurity entry:

    1. Right-click TurnOffRpcSecurity, and then click Modify.
    2. In the Edit DWORD Value dialog box, type the value 1, and then click OK.

  7. Set the DWORD value for the AllowOnlySecureRpcCalls entry:

    1. Right-click AllowOnlySecureRpcCalls, and then click Modify.
    2. In the Edit DWORD Value dialog box, type the value 0, and then click OK.

  8. Set the DWORD value for the FallbackToUnsecureRPCIfNecessary entry:

    1. Right-click FallbackToUnsecureRPCIfNecessary, and then click Modify.
    2. In the Edit DWORD Value dialog box, type the value 0, and then click OK.

After you have made the registry changes, you must restart the MSDTC service. To restart the MSDTC service, follow these steps:

  1. Click Start, click Run, type cmd, and then click OK.
  2. Type net stop msdtc , and then press ENTER.
  3. Type net start msdtc , and then press ENTER.
  4. Open the Component Services Microsoft Management Console (MMC) snap-in. To do this, click Start, click Run, type dcomcnfg.exe, and then click OK.
  5. Expand Component Services, expand Computers, and then expand My Computer.
  6. Right-click My Computer, and then click Properties.
  7. Click the MSDTC tab, and then click Security Configuration.
  8. Change the account in DCT Logon Account to NT AUTHORITY\NetworkService. If a password is needed, enter a blank password.
  9. Click OK two times.

References

Third-party information disclaimer

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

Applies to

  • Windows Server 2012 R2 Datacenter
  • Windows Server 2012 R2 Standard
  • Windows Server 2012 R2 Essentials
  • Windows 8.1 Enterprise
  • Windows 8.1 Pro
  • Windows 8.1
  • Windows Server 2012 Datacenter
  • Windows Server 2012 Datacenter
  • Windows Server 2012 Standard
  • Windows Server 2012 Standard
  • Windows Server 2012 Essentials
  • Windows 8 Enterprise
  • Windows 8 Pro
  • Windows 8
  • Windows Server 2008 R2 Datacenter
  • Windows Server 2008 R2 Standard
  • Windows Server 2008 R2 Enterprise
  • Windows 7 Enterprise
  • Windows 7 Professional
  • Windows Server 2008 Datacenter
  • Windows Server 2008 Standard
  • Windows Server 2008 Enterprise
  • Windows Vista Enterprise
  • Windows Vista Business
  • Microsoft Windows Server 2003 Enterprise Edition (32-bit x86)
  • Microsoft Windows Server 2003 Standard Edition (32-bit x86)
  • Microsoft Windows Server 2003 Datacenter Edition (32-bit x86)
  • Microsoft Windows Server 2003 Web Edition
  • Microsoft Windows Server 2003 Standard x64 Edition
  • Microsoft Windows Server 2003 Enterprise x64 Edition
  • Microsoft Windows Server 2003 Datacenter x64 Edition
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Professional x64 Edition