"The spelling check was stopped before it finished" error when you use Office Outlook 2007 to send an email message that contains some misspelled words

Consider the following scenario:

• You configure Microsoft Office Outlook 2007 to automatically check for spelling mistakes before you send an email message.
• You create an email message, and then you type some misspelled words that are within three words from one another.
• You click Send, or you press Ctrl + Enter to send the email message.
• You click the Ignore Once button to ignore the first misspelled word, and then you click the Change button to correct the second misspelled word.

In this scenario, you receive the following error message: Note Although this issue occurs in Office Outlook 2007, the spelling checker is a component of Microsoft Office Word 2007.

To resolve this issue, apply the following update:

Registry key information

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: After you install the hotfix package, follow these steps to enable the hotfix:

1. Click Start, click Run, type regedit in the Open box, and then click OK.
2. Locate and then click the following registry subkey:
   HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\Options
3. On the Edit menu, point to New, and then click Dword Value.
4. Type CleanPreviousCAOnWordMailProofing, and then press Enter.
5. In the details pane, right-click CleanPreviousCAOnWordMailProofing, and then click Modify.
6. In the Value data box, type 1, and then click OK.
7. Exit Registry Editor.

Note This registry key affects only the spelling checker in Office Outlook 2007. 

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.