The Logging is a feature in Outlook 2007 that’s used to troubleshoot technical issues. It keeps a log file of email and calendar events in Outlook. Here’s how to enable or disable this feature.

1. Under the Tools menu, click Options.

2. On the Other tab, click Advanced Options.

3. Check (enable) or uncheck (disable) the Enable logging (troubleshooting) box.

4. Click OK twice and restart Outlook. Logging Enabled should appear in the title bar.

The log file is created at C:\Users\user name\AppData\Local\Temp\Outlook Logging\OPMLog.log in Windows Vista. For Windows XP users, it will be created at C:\Documents and Settings\user name\Local Settings\Temp\Outlook Logging\OPMLog.log

For more information, see What is the Enable logging (troubleshooting) option?