Hello,
If replacing the SHORT names for the paths does not resolve your issue you can also try to start the process manually to see if there are any errors reported from the command line.
You can run this
"C:\Program Files (x86)\SmarterTools\SmarterMail\Service\Clam\bin64\clamd.exe" -c "C:\Program Files (x86)\SmarterTools\SmarterMail\Service\Clam\etc\clamd.conf" --debug
Thank you
Tony Scholz
System/Network Administrator
SmarterTools Inc.
www.smartertools.com