How to turn on the Enable Mail Logging option for troubleshooting in Outlook 2003 and Outlook 2007

This article describes how to enable the mail logging option in Microsoft Office Outlook 2007 and in Microsoft Office Outlook 2003.

To enable the mail logging option, follow these steps:

1. On the Tools menu, click Options.
2. On the Other tab, click Advanced Options.
3. Click to select the Enable mail logging (troubleshooting) check box in Outlook 2003 and the Enable logging (troubleshooting) check box in Outlook 2007, and then click OK two times.

You can also enable the mail logging option by editing the Registry. To do this, follow these steps.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

1. Click Start, and then click Run.
2. In the Open dialog box, type regedit, and then click OK.
3. In Registry Editor, locate the following key for Outlook 2007:
   HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Options\Mail
   Locate the following key for Outlook 2003:
   HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Options\Mail
4. In the right pane, right-click EnableLogging, and then click Modify.
5. In the Edit DWORD Value dialog box, type 1 under Value data, and then click OK.
6. Quit Registry Editor.

Additionally, you can track failures in the application log by editing the registry. To do this, follow these steps.

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

1. Click Start, and then click Run.
2. In the Open dialog box, type regedit, and then click OK.
3. In Registry Editor, locate the following key for Outlook 2007:
   HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\
   Locate and then select the following key for Outlook 2003:
   HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\
4. On the Edit menu, point to New, and then click Key.
5. Type CancelRPC, and then press ENTER to name the key.
6. On the Edit menu, point to New, and then click DWORD Value.
7. Type EnablePerfTracking, and then press ENTER to name the DWORD.
8. In the right pane, right-click EnablePerfTracking, and then click Modify.
9. In the Edit DWORD Value dialog box, click Hexadecimal, and then type 1b under Value data.
10. Click OK.
11. Quit Registry Editor.

Note The following is the default location of the log files: This setting may be customized, but you can access this setting by clicking Start, clicking Run, typing %temp% in the Open box, and then clicking OK.