Microsoft small business knowledge base

Article ID: 903774 - Last Review: September 12, 2011 - Revision: 6.0


This article is intended for advanced computer users. If you are not comfortable with advanced troubleshooting, you might want to ask someone for help or contact support. For information about how to do this, visit the following Microsoft Web site: (


When you deploy software updates and hotfixes to computers in your organization by using Microsoft Windows Server Update Services (WSUS) or by using the Microsoft Update Web site, some Microsoft Office updates are not successfully installed on certain client computers. In this situation, the user on the client computer may receive the following message in the Automatic Updates dialog box:
Updates were unable to be successfully installed
If you view the C:\Windows\WindowsUpdate log file on the affected client computer, you may notice a log entry that is similar to the following:
<date>    <time>    3124   c54   Handler   : WARNING: First failure for update {GUID}, transaction error = 0x8024200b, MSI result = 0x80070643, MSI action = StartCache
If you view the Status tab of the Computer Properties -- Web Page Dialog box for the affected computer on the Windows Server Update Services administrative Web site, you notice the following entry:
Collapse this tableExpand this table
Update TitleApprovalStatus
Update name and KB numberInstallFailed
If you click Failed in this table, the following information is displayed:
Collapse this tableExpand this table
DateDetailsResult code
Date and timeInstallation Failure: Windows failed to install the following update with error 0x80070643: Update name and KB number0x80070643
Date and timeDownload succeeded.0x00000000


This issue may occur if the Office Source Engine service (Ose.exe) startup type is set to Disabled. By default, the Office Source Engine service startup type is set to Manual. Microsoft Windows Installer uses a custom action to start the Office Source Engine service. However, Windows Installer cannot start the Office Source Engine service if the Office Source Engine service is disabled.


To resolve this issue, follow these steps:
  1. Determine the status of the Office Source Engine service. To do this, follow these steps:
    1. Click Start, click Run, type services.msc, and then click OK.
    2. In the list of services, double-click Office Source Engine.
    3. View the option that appears in the Startup type list.
  2. If the startup type is set to Disabled, change the startup type to Manual. To do this, click Manual in the Startup type list, and then click OK.
  3. Try to install the Office Update packages again.

  • Microsoft Office Professional Edition 2003
  • Microsoft Office Small Business Edition 2003
  • Microsoft Office Basic Edition 2003
  • Microsoft Office Outlook 2003
  • Microsoft Office OneNote 2003
  • Microsoft Office PowerPoint 2003
  • Microsoft Office Publisher 2003
  • Microsoft Office Access 2003
  • Microsoft Office Basic 2007
  • Microsoft Office Enterprise 2007
  • Microsoft Office Home and Student 2007
  • Microsoft Office Professional 2007
  • Microsoft Office Professional Plus 2007
  • Microsoft Office Standard 2007
  • Microsoft Office Ultimate 2007
  • Microsoft Office Word 2007
  • Microsoft Office Visio Professional 2007
  • Microsoft Office Visio Standard 2007
  • Microsoft Office Publisher 2007
  • Microsoft Office Project Professional 2007
  • Microsoft Office Project Standard 2007
  • Microsoft Office PowerPoint 2007
  • Microsoft Office Outlook 2007
  • Microsoft Office Outlook 2007 with Business Contact Manager
  • Microsoft Office OneNote 2007
  • Microsoft Office Excel 2007
kbresolve kbtshoot kbprb KB903774
Additional support options
Ask The Microsoft Small Business Support Community
Contact Microsoft Small Business Support
Find Microsoft Small Business Support Certified Partner
Find a Microsoft Store For In-Person Small Business Support