Creating Custom Timer Jobs in Windows SharePoint Services 3.0

Learn about building, deploying, and debugging custom timer jobs in Windows SharePoint Services 3.0, and examine the various configuration options that are available to developers.


  • Introduction to Windows SharePoint Services Timer Jobs
  • Creating Custom Timer Jobs
  • Configuration Options
  • Deploying Custom Timer Jobs
  • Debugging Custom Timer Jobs

Many different types of applications require some variation of a scheduled process to run. These processes are used for complex calculations, notifications, and data validation checks, among many other tasks. Windows SharePoint Services is no exception. To return relevant and timely results to users’ search queries, the content within a server farm must be indexed ahead of time. This indexing is performed at scheduled intervals. Search is only one example; another example might be sending nightly or weekly e-mail messages to users who want to be notified when changes occur in a SharePoint list. These scheduled tasks are handled by the SharePoint Timer service, a Windows service that is set up as part of the installation process.

The SharePoint Timer service is similar to tasks that you can create in any version of Windows by using the Task Scheduler application. The major benefits of using the SharePoint Timer service compared with Windows Task Scheduler jobs is that the timer service knows the topology of the server farm, and you can load balance the jobs across all the servers in the farm or tie them to specific servers that run particular services.

The timer job that is demonstrated in this article serves to replace the warmup script.

Andrew Connell
Developer & Chief Course Artisan, Voitanos LLC. | Microsoft MVP
Written by Andrew Connell

Andrew Connell is a web & cloud developer with a focus on Microsoft Azure & Microsoft 365. He’s received Microsoft’s MVP award every year since 2005 and has helped thousands of developers through the various courses he’s authored & taught. Andrew’s the founder of Voitanos and is dedicated to helping you be the best Microsoft 365 web & cloud developer. He lives with his wife & two kids in Florida.