It is possible to receive the error, 938816, when one of two conditions exist:

1. You are attempting to create a new MAPI form or you’ve tried to open some custom forms in Outlook 2003.
2. You notice changes in how your application runs after you’ve installed post-Office 2003 Service Pack 3 updates.

The unwanted behaviors that you will see in Microsoft Office Outlook 2003 can include any of the following effects:

• You are receiving messages asking you to contact the administrator after you’ve created a new MAPI form in Outlook 2003.
• Or you are getting a message that informs you that a form could not be displayed and that you should again contact your administrator. This can occur if you are for instance attempting to open a custom form.
• Or, after receiving a custom form as an email item you try to open it and get a message stating that the form cannot be opened or displayed. You are again asked to contact your administrator.

To fix these error conditions you should go to the Microsoft Support web site and search for the file:  EnableMAPIFormsInOutlook.msi. Select the file and then click Run in the File Download dialog box. The Fix it wizard will walk you through the steps to correct this error.

I’d also recommend that you save the fix file to your local hard drive or some other media such as a writeable CDROM so that you have a local copy. You can also save the file if you are not on the computer that is having the problem.

There is another way for you to fix the problem yourself without using the wizard. However, these steps involve touching the registry and any time you touch (modify) the registry you can inadvertently cause serious damage to your system. So I strongly advise that you backup your registry before performing this task. If you have any problems after modifying the registry then you will have a backup copy that your can restore to get your system back into a known working state. Please review article number 322756 in the Microsoft Knowledge Base for instructions on how to backup and restore the registry.

Now, if you still want to fix these issues manually then you need to enable MAPI forms. Here are step-by-step instructions on how you can enable MAPI forms by performing the following steps.

• First go down to the lower left corner of your screen and click the Start button.
• Then to your right on the pop-up screen click Run and then type “regedit” without the quotes.
• Next click OK or just hit the Enter button on your keyboard. This will bring up your Registry Editor.
• At this point you want to locate and then click the following registry subkey:
  HKEY_CURRENT_USERSoftwareMicrosoftOffice11.0OutlookForms
• Next, double-click the EnableMapiForms registry entry and type 1 in the Value data text box.
• Hit Enter or just click OK.

The registry path might not exist. That’s okay. What you can do is to create a new dWord-Value registry entry and name it EnableMapiForms. Give it the value of 1.

I mentioned earlier that you can also experience changes in how your application runs after you’ve installed post-Office 2003 Service Pack 3 updates. Some of these updates include installing an update to the Mso.dll file.

You will notice that you now have the ability to configure Office 2003 such that you can enable or to deny specific COM components. You can find more information about this change in article number 938815 in the Microsoft Knowledge Base.

Another change you might notice is that some COM components are not functioning as expected. This may be the case if they have unusual characteristics.

For instance you might experience reduced functionality of an add-in or an ActiveX control. Or the COM component is seemingly blocked. These limitations will be noticeable after you install Office 2003 Service Pack 3. You can find more information about these changes in article number 938814 in the Microsoft Knowledge Base.

You might have issues or problems when you run the Microsoft Office Document Imaging program after you install Office 2003 Service Pack 3. There were changes made to the behavior of Microsoft Office Document Imaging. You can find out more information about the changes by reviewing article number 938813 in the Microsoft Knowledge Base.

Other problems you might notice is that you have lost versioning capabilities on some documents such as Office files that are saved in certain formats. You can get more information about which files don’t have versioning by reviewing article number 938807 in the Microsoft Knowledge Base.