Outlook 2003: Unable to turn off out-of-office message

After the User come back to office and try to disable the out of office message they are not able to do that, the user get an error window that states the command is not available, see program documentation about to use this extension.

How to solve?
1. Open the Outlook
2. Go to help
3. Click about microsoft
4  Click on disable item
5. You should see your out of office extention there and just click enable

You can try to disable your out of office, if it is not working try to restart the outlook after you enable the extension.