|FAQ for Net Send Lite v3.02|
I get "Overlapped I/O operation is in progress" when sending a message using Net Send Lite, why?
This is an error that is generated when the Messenger service is not running. To check if the Messenger service is running do the following:
Once you are sure the Messenger Service is running please try to send a test message to your own username or computername.
If you still receive the "Overlapped I/O operation is in progress" error message, then the username or computername you are trying to send the message to does not exist or could not be located. Test this by sending a message to your own computername.
Another note: Try restarting the Messenger service via Right-Click Restart inside of the Services Control Panel. Then also restart the service name "TCP/IP NetBIOS Helper". This is the service that does the name resolution on your username.