Troubleshooting Windows Update Issues with Vista

by Mitch Tulloch [Published on 9 April 2008 / Last Updated on 9 April 2008]

Two log files you can use to try and troubleshoot problems installing updates onto Windows Vista.

If you are having problems getting certain updates installed on Vista, there are two places you can look to troubleshoot:

%windir%\windowsupdate.log, a log file for Windows Update events

%windir%\Logs\CBS\CBS.log, a log file that tracks events to the servicing stack

These log files include the following fields: Time/Date Stamp, Message Severity, Message Source, Operation Type, and Main Text.


Mitch Tulloch was lead author for the Windows Vista Resource Kit from Microsoft Press, which is the book for IT pros who want to deploy, maintain and support Windows Vista in mid- and large-sized network environments. Mitch was also the author of Introducing Windows Server 2008 and technical project lead for the Microsoft Office Communications Server 2007 Resource Kit, both books also from Microsoft Press. For more information on these and other books by Mitch, see

The Author — Mitch Tulloch

Mitch Tulloch is a widely recognized expert on Windows administration, networking, and security. He has been repeatedly awarded Most Valuable Professional (MVP) status by Microsoft for his outstanding contributions in supporting users who deploy and use Microsoft platforms, products and solutions. Mitch has published over two hundred articles on different IT websites and magazines, and he has written or contributed to almost two dozen books and is lead author for the Windows 7 Resource Kit from Microsoft Press. For more information, see .

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