Outlook 2007 Service Pack 2

Martin Brinkmann
Mar 26, 2009
Updated • May 28, 2017
Email, Microsoft Outlook

Microsoft has - rather quietly - released an preliminary update for Microsoft Outlook 2007 that will also be included in the soon to be coming Microsoft Office Service Pack 2. The Outlook 2007 update increases the performance and responsiveness of Microsoft's desktop email client noticeably. Four key areas are improved by the patch including startup, shutdown, general responsiveness and folder or view switches.

The general responsiveness of Outlook 2007 has been increased by reducing the I/O disk usage processes and UI response times. Startup has been improved by moving long operations from the initial startup phase, while shutdown time was decreased by making Outlook exit predictable. Finally the folder and view switching benefits from improved view rendering and folder switching routines.

The update is currently classified as a hotfix meaning that users will have to request it by providing their email address on a form at the Microsoft website. Users who do use Microsoft Outlook 2007 as their main email client will benefit from the update to a large extent. Startup time might be slower during first startup because of a one-time data structure upgrade. The performance gain during startup or shutdown should be noticeable afterwards however.

Microsoft has updated the Mailbox Storage Size Guidance to reflect the performance and responsiveness improvements when utilizing Cached Exchange Mode with respect to mailbox/OST sizes:

  • Up to 5 gigabytes (GB): This size should provide a good user experience on most hardware.
  • Between 5 GB and 10 GB: This size is typically hardware dependent. Therefore, if you have a fast hard disk and much RAM, your experience will be better. However, slower hard drives, such as drives that are typically found on portable computers or early generation solid state drives (SSDs), experience some application pauses when the drives respond.
  • More than 10 GB: This size is where short pauses begin to occur on most hardware.
  • Very large, such as 25 GB or larger: This size increases the frequency of the short pauses, especially while you are downloading new e-mail. Alternatively, you can use Send/Receive groups to manually sync your mail.

The service pack for Outlook 2007 contains additional improvements for components like the Calendar or Outlook search among others. Interested users can read up on the Outlook 2007 SP1 update by visiting the extensive Microsoft Knowledgebase article and an official blog post covering the release announcement.

Update: Microsoft has released a second service pack for Outlook 2007. You can download it from this website.

Article Name
Outlook 2007 Service Pack 2
Microsoft has released an preliminary update for Microsoft Outlook 2007 that will also be included in the soon to be coming Microsoft Office Service Pack 2.
Ghacks Technology News

Tutorials & Tips

Previous Post: «
Next Post: «


  1. Nocturnal said on March 29, 2009 at 5:39 am

    Thanks. This really did work. I am very happy with the way it works now. Outlook is a lot more snappier.

Leave a Reply

Check the box to consent to your data being stored in line with the guidelines set out in our privacy policy

We love comments and welcome thoughtful and civilized discussion. Rudeness and personal attacks will not be tolerated. Please stay on-topic.
Please note that your comment may not appear immediately after you post it.