Tasks are missing after you pin Outlook 2013 to the Windows taskbar

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To work around this issue, use one of the following methods.

Method 1: Delete the LastUILanguage registry value

To export and delete the LastUILanguage registry value, follow these steps:

1. Unpin the Outlook 2013 icon.
2. Exit Outlook 2013.
3. Use Regedit to export the following registry key:
   
   HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook
4. After you export the Outlook registry key, delete the LastUILanguage registry value.
5. Start Outlook 2013, and then re-pin the icon.

Method 2: Export and delete the Setup registry key

If method 1 does not resolve the issue, export and delete the Setup registry key. To do this, follow these steps:

1. Unpin the Outlook 2013 icon.
2. Exit Outlook 2013.
3. Use Regedit to export and then delete the following registry key:
   
   HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Outlook\Setup
4. Start Outlook 2013, and then re-pin the icon.