This setting restricts the HTML viewer from caching images of viewed documents to the client workstation. By default, PreventViewerClientCaching is true, and the HTML viewer does not cache document images. Change this setting to false to allow the HTML viewer to cache document images to the user's Temporary Internet Files folder. Cached documents expire after five minutes. Once expired, documents must be re-requested from the server.
The PreventViewerClientCaching setting applies to documents that are rendered as images in the HTML document viewer. It does not apply to documents that are not rendered as images, such as OLE documents. These documents will be cached regardless of this setting.
Setting PreventViewerClientCaching to true may impact HTML viewer performance.