ERROR: Error in registry for extension "Exchange Extensions;?"

[Costi Zaboura]

Description

The user is working with Attunity InFocus and its Outlook capabilities. When starting OUTLOOK 2003, the following error message is displayed:


Microsoft Office Outlook

Error in registry for extension "Exchange Extensions;?".
The syntax or format of the registry entry is incorrect. Check the registry settings and compare the registry for this extension to other extensions in the registry.


Solution

This issue was diagnosed by Microsoft as an Outlook 2003 BUG, described by KB823633. Microsoft recommends installing the Microsoft Office 2003 Service Pack 1 (or newer if exists).

Another solution; and in case SP1 is not installed, is to manually edit the Windows Registry as follows:

Quit Outlook 2003.
Click Start, click Run, type regedit in the Open box, and then click OK.
Expand the registry, and then click to select the following subkey:
HKEY_LOCAL_MACHINE\Software\Microsoft\Exchange\Cli ent\Extensions

Double-Click on the Exchange Extensions.
Enter the follow value:
4.0;emsuix32.dll;7;011111111111110;1111011100

Close the Registry Editor.