You tried to upgrade to Symantec Mail Security 5.0 for Microsoft Exchange. When you attempted to upgrade, you may have seen a message similar to:
"A previous version of Symantec Mail Security for Microsoft Exchange has been detected. Please uninstall the previous version before proceeding with the Symantec Mail Security for Microsoft Exchange installation."
You may also have seen a message that indicated that the wizard was interrupted.
In your application log, you see:
Description: Product Symantec Mail Security for Microsoft Exchange installation operation failed."
This problem can occur for different reasons. Perform each of the following actions in order to eliminate the most common causes:
To remove fragments from previous installation attempts
To check for problems with DirectX
To check for MDAC errors
If the problem to persists, do the following:
To collect detailed MSI logs of a failed installation of Symantec Mail Security 5.0 for Microsoft Exchange, read the following Symantec Knowledge Base article:
To manually uninstall previous versions of Symantec Mail Security products for Exchange, read the following Symantec Knowledge Base articles for the specific version that needs to be removed:
To verify your version of .NET framework, please see the documentation on Microsoft's Web site:
To download the ComCheck utility, see the following Microsoft Knowledge Base article:
If you saw the message about a previous version, you may also need to manually remove that product.
If the registry contained a NAVMSE key, then Norton AntiVirus 2.x for Microsoft Exchange was installed at one time.
If the registry contained a SAVFMSE key, then Symantec AntiVirus/Filtering 3.x for Microsoft Exchange was installed at one time.
Remove any remnants of the old programs. The References section of this document includes links to the manual removal instructions for these products.