Open Event Viewer and filter for the events you want to see.
To read the event log in Windows Server 2003 and Windows XP
In Control Panel, open Administrative Tools.
Start Event Viewer.
In the list of event logs, select Application.
On the View menu, click Filter.
In the Event source list, select VSTO 3.0.
For installation events, in the Event ID box, type 4096.
Click OK to see the filtered view.
To read the event log in Windows Vista and Windows Server 2008
In Control Panel, open Administrative Tools.
Start Event Viewer.
Expand Windows Logs.
In the list of event logs, select Application.
On the Action menu, click Filter Current Log.
In the Event source list, select VSTO 3.0.
For installation events, in the Event ID box, type 4096.
Click OK to see the filtered view.
The event viewer includes the following information:
These error messages can help you determine the reason for an installation problem, such as an untrusted certificate, an untrusted document location, or an invalid deployment manifest.
After a Visual Studio Tools for Office solution is uninstalled, the error messages remain in the event log.
To show or log error messages when a Visual Studio Tools for Office solution is running, see Debugging in Document-Level Projects and Debugging in Application-Level Projects.
Localization
The language of the error message is determined by the Visual Studio Tools for Office runtime language. For instance, if the end user computer has the Japanese language pack for Visual Studio Tools for Office installed, the error message is written to the event log in Japanese.