You receive an "Error 80070643" error message when you try to update Office 2003 by using Software Update Services


When you try to update Microsoft Office 2003 by using Microsoft Software Update Services (SUS), you receive the following error message:
Error 80070643
Additionally, the WindowsUpdate.log file may contain errors that are similar to the following:
2005-07-11 10:44:01 1056 250 Handler : MSI transaction completed. MSI: 0x80070643, Handler: 0x8024200b, Source: No, Reboot: 0

2005-07-11 10:44:01 1056 250 Handler : WARNING: First failure for update {EF358F39-A507-45A8-9E84-D626D099E8BD}, transaction error = 0x8024200b, MSI result = 0x80070643, MSI action = StartCache


Typically, this issue occurs if one of the following conditions is true:
  • The Microsoft Office Source Engine (Ose.exe) is disabled.
  • The Ose.exe file is corrupted.


To resolve this issue, use the following methods in the order that they are presented.

Method 1: Determine the status of the Office Source Engine service

To determine the status of the Office Source Engine service, 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 Startup type list.
  4. 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.
  5. Try to install the Office update again.

Method 2: Repair the Ose.exe file

To repair the Ose.exe file, copy the Ose.exe file from the Office 2003 CD. To do this, follow these steps:
  1. Determine where the Ose.exe file is located. By default, the Ose.exe file is in the following location:
    path:\Program Files\Common Files\Microsoft Shared\Source Engine\
  2. Insert the Office 2003 CD in the CD drive.
  3. Right-click Start, and then click Explore.
  4. Use Microsoft Windows Explorer to locate the following folder on the Office 2003 CD:
  5. Right-click the Ose.exe file, and then click Copy.
  6. Locate and then click to select the folder in which the Ose.exe file is located on the computer. For example, locate and then click to select the following folder:
    path:\Program Files\Common Files\Microsoft Shared\Source Engine
  7. Right-click the Source Engine folder, and then click Paste.
  8. If you are prompted to replace an existing file, click Yes.

Method 3: Remove and then reinstall Office 2003

To remove and then reinstall Office 2003, follow these steps.

Note Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.
  1. Insert the Office 2003 CD in the CD drive.
  2. Click Start, and then click Control Panel.
  3. Click Add or Remove Programs.
  4. In the Currently installed programs list, click the version of Office 2003 that is installed, and then click Remove.
  5. Click Yes when you are prompted to confirm that you want to remove Office 2003.
  6. After Office 2003 is removed from the computer, click Add New Programs.
  7. Click CD or Floppy.
  8. In the Install Program From Floppy Disk or CD-ROM dialog box, make sure that the Office 2003 CD is in the CD drive. Then, click Next.
  9. Click Finish. Then, follow the prompts to complete the installation of Office 2003.
  10. Click OK when Office 2003 Setup is finished.
  11. Remove the Office 2003 CD from the CD drive.

More Information

When you install Office 2003 from the Office 2003 CD or from an image of the Office 2003 CD, Setup installs the Office Source Engine (Ose.exe) system service to copy the required installation files to the local computer. After Setup.exe reads the Setup settings file, Setup.exe performs the following actions:
  • Determines the drive that has the most available space on the local computer
  • Verifies that the user has administrative rights
  • Installs the Office Source Engine
For more information about the Office Source Engine, see one of the following Microsoft Office 2003 Editions Resource Kit resources:

Article ID: 903772 - Last Review: Feb 15, 2017 - Revision: 2