- Go to the SMEX\Engine\Emanager folder.
- Rename the VSAPI32xxxxxxxxxx.dll" file to "_VSAPI32xxxxxxxxxx.dll".
- Start the ScanMail for Microsoft Exchange Master Service. The file should be automatically recreated.

ScanMail for Exchange 12.0 , ScanMail for Exchange 10 , ScanMail for Exchange 11.0 , ScanMail for Exchange 14.0 , ScanMail for Exchange 12.5