XADM: "The T.120 MCU Service Couldn't Be Stopped" Error Message When You Try to Install Exchange 2000 Conferencing Server Service Pack 1 (330322)


The information in this article applies to:

  • Microsoft Exchange 2000 Conferencing Server
  • Microsoft Exchange 2000 Server
  • Microsoft Exchange 2000 Enterprise Server
This article was previously published under Q330322

SYMPTOMS

If you try to upgrade to Microsoft Exchange 2000 Conferencing Server Service Pack 1 (SP1), you receive an error message similar to the following when the Exchange Conferencing Server Setup program tries to stop the Multipoint Control Unit (MCU):
The T.120 MCU service couldn't be stopped. Please verify that you have the correct permissions to stop services.
This problem occurs if both of the following conditions are true:
  • You use the following Windows Installer command to perform the upgrade:
    msiexec /fvemus "microsoft exchange 2000 conferencing server.msi"
  • You run the Windows Installer command from the folder that contains the SP1 files.
This problem occurs even though you use an account that has the correct permissions to perform the upgrade.

CAUSE

This problem may occur if the MCU service does not stop quickly enough.

WORKAROUND

To work around this problem, use the following methods in the order in which they are presented.

Method 1: Retry the Command

Run the Exchange Conferencing Server SP1 Setup program again. If the problem recurs, go to method 2.

Method 2: Stop the MCU Service from the Command Prompt

Run the following command from a command prompt to stop the MCU service:

net stop "microsoft exchange t.120 mcu"

If you can stop the MCU service successfully, run the Exchange Conferencing Server SP1 Setup program again.

If you cannot to stop the MCU service, go to method 3.

Method 3: End the XT120MCU.exe Process

  1. Install the Windows 2000 Support Tools if they are not already installed.For additional information about how to install the Windows 2000 Support Tools, click the article number below to view the article in the Microsoft Knowledge Base:

    301423 HOW TO: Install the Windows 2000 Support Tools to a Windows 2000 Server-Based Computer

  2. Click Start, and then click Run.
  3. In the Open box, type cmd, and then click OK.
  4. Type the following command, and then press ENTER to view the processes that are currently running:

    tlist |more

  5. Note the numeric value that corresponds to the Xt120mcu.exe process.
  6. Type the following command, and then press ENTER to end the Xt120mcu.exe process, where pidvalue is the numeric value that you noted in step 5:

    kill -f pidvalue

  7. Rerun the Exchange Conferencing Server SP1 Setup program.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack

For additional information, click the article number below to view the article in the Microsoft Knowledge Base:

290882 XCCC: New Features in Exchange 2000 Conferencing Server Service Pack 1

Modification Type:MajorLast Reviewed:6/25/2004
Keywords:kbbug kbnofix KB330322
©2004 Microsoft Corporation. All rights reserved.