Use logging to troubleshoot email issues in Outlook

  1. Set up email registration when Outlook is not available
  2. Enable Transaction Log
  3. Troubleshooting Outlook

Set up email registration when Outlook is not available

If the unexplained email error persists and restarting the computer does not resolve the issue, enable Outlook login and check the LOG file. The LOG file contains a detailed list of what Outlook did when sending and receiving messages. This special LOG file allows you to identify the problem yourself or take it to your ISP’s support team for analysis.

The instructions in this article apply to Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, and Outlook for Office 365.

Enable Transaction Log

To enable login in Outlook:

  1. Go to File parameters:

  2. In the dialog box Outlook options select tab Additionally

  3. In chapter Other Check the box Enable troubleshooting logging

  4. Select Okay

  5. Close Outlook and restart it.

  6. When Outlook opens, a message appears explaining that logging is enabled and can cause performance issues.

Troubleshooting Outlook

After you enable logging, reproduce the issue so that you can check the log. After encountering the same error, disable logging (in the Outlook Options dialog box), restart Outlook and locate the Outlook LOG file.

To find the log file:

  1. Press hotkey Windows key + R

  2. In the dialog box walk enter %temp% and press Enter

  3. Locate the LOG file in the Temp folder. The file name depends on the problem and the type of email account.

    • POP and SMTP † Open file OPMLog.log if your account connects to a POP server, or if you are having trouble sending email.
    • IMAP † Open folder Outlook Logging , followed by a folder named after your IMAP account. Open from there imap0.log, imap1.log or any other file in sequence.
    • hot mail † If the Hotmail email account is registered in Outlook, open the folder Outlook Logging select hot mail and find http0. log, http1.log or any other file in sequence.
  4. Select a file to open it.

The LOG file can be read in any text editor, such as Notepad on Windows and TextEdit on macOS. Or there are several free text editors if you prefer something more advanced.

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