Installation of Symantec Mail Security for Exchange (SMSMSE) Fails Without Error Message and the Last Dialog Box Displays "The wizard was interrupted before Symantec Mail Security for Exchange could be completely installed"
1. Open the SMSMSE installation log %TEMP%\SMSMSE_Setup.log in Notepad or another text editor. 2. Search for the string fnGetReinstallProductMsiProperties. If it isis present, this means the SMSMSE installer has detected a previous version and is attempting to perform an in place upgrade.
This error will occur if a previous installation is partially present but is too incomplete to perform an in place upgrade.