When you run Microsoft Windows Update to scan for updates or to apply updates to any applications that use Microsoft Windows Installer (MSI) 3.1 together with Windows Update, you may receive the following error message in Event Viewer on a Windows XP-based computer:
Application popup: svchost.exe - Application Error : The instruction at "0x745f2780" referenced memory at "0x00000070". The memory could not be "read".
Additionally, a memory leak may occur when Windows Update scans for updates that use Windows Installer.
These problems may occur when you try to scan for Microsoft Office updates. You may also experience these problems when you use any one of the following update mechanisms:
- The Microsoft Update Web site.
- Automatic Updates through the Internet or through Windows Server Update Services (WSUS).
- Microsoft Systems Management Server Inventory Tool for Microsoft Updates (SMS ITMU).
- Microsoft Baseline Security Analyzer (MBSA).
- Any application that performs update scans by using the offline scan CAB file (Wsusscan.cab) that uses the Windows Update Agent (WUA).
For example, you may experience this problem when you try to scan for Microsoft Office updates or when you apply an update to any application on a computer that uses Microsoft Windows Installer 3.1 (also known as MSI) together with the Windows Update Agent.
This problem may occur when the Windows Update Agent tries to scan for Windows Installer updates.
To resolve this problem, apply the latest Msi.dll hotfix. This hotfix is described in the following Microsoft Knowledge Base article:
You receive an access violation error and the system may appear to become unresponsive when you try to install an update from Windows Update or from Microsoft Update
Hotfix replacement information
The hotfix that was described in this article (916089) has been replaced by a more recent hotfix (927891). Hotfix 927891 includes the updates that are listed in this article. When Windows Update scans for updates that use Windows Installer, the system may stop responding. Hotfix 927891 resolves this problem.
This problem was
corrected in Windows Update Agent 3.0 and update 927891.
This update decreases the duration of a scan that uses the Windows Update Agent. However, a scan is still a CPU-intensive operation. The Svchost.exe process contains the Automatic Updates service. When you perform a scan, the Svchost.exe process can cause CPU usage to reach 100 percent for a prolonged time. For example, Microsoft Office updates use Windows Installer. When Microsoft Office updates are detected, these updates can contribute to 100 percent CPU usage for a prolonged time.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
Description of the standard terminology that is used to describe Microsoft software updates
If you are still experiencing a problem that resembles the one that this article describes, it may be a different problem.
For more information about similar problems and resolutions, click the following article numbers to view the articles in the Microsoft Knowledge Base:
You cannot deploy software updates on a computer that is running Windows XP or Windows Server 2003
Host process may stop unexpectedly in Windows Server
messages when you start a Windows XP-based computer and
then try to download Windows
process may end unexpectedly on a Windows Server
Authentication Service receives an unknown attribute in a
packet, a Windows Server 2003-based Internet
Authentication Service server stops responding
You receive an error
message after a Windows XP-based computer runs an
automatic update, and you may be unable to run any
programs after you close the "svchost.exe - Application
Error" error message dialog box
If these articles do not help you resolve the
problem or if you experience symptoms that differ from
those that this article describes, please search the
Microsoft Knowledge Base for more information. To search
the Microsoft Knowledge Base, visit the following
Microsoft Web site:
Then, type the text of the error message that you receive,
or type a description of the problem in the Search