To resolve this issue, you must increase the
Request execution timeout (in seconds) value for the SharePoint Server 2007 Web site. To do this, follow these steps:
- Click Start, point to Administrative Tools, and then click Microsoft Internet Information Services (IIS) Manager.
- In Microsoft Internet Information Services (IIS) Manager, expand the server that is running IIS and that hosts the SharePoint Server 2007 Web site. Then, expand Web Sites.
- Right-click the Web site that hosts the Excel Services Web front end server, and then click Properties.
- On the Web site properties page, click the ASP.NET tab, and then click Edit Global Configuration.
- In the ASP.NET Configuration Settings dialog box, click the Application tab.
- In the Request execution timeout (in seconds) box, enter the number of seconds that you want to allow for before the connection is timed out, and then click OK two times.