When you upgrade from Microsoft Outlook 2002 to Microsoft Office Outlook 2007 or to Microsoft Office Outlook 2003, you receive an error message that is similar to the following:

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This behavior occurs if you have installed an earlier version of the PGP e-mail encryption program on your computer.

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To resolve this behavior remove the PGP e-mail encryption program. To do so, follow these steps:

1.	Click Start, point to Control Panel, and then click Add or Remove Programs.
2.	Under Currently installed programs, select the PGP program.
3.	Click Remove.
4.	Restart your computer.

Outlook 2003 will now connect to the Microsoft Exchange Server.

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The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

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