credentials test failed


I've tried SolarWinds Real-Time Bandwidth Monitor in my windows 7 to monitor bandwith but always it says that "credentials test failed".

IP adress or hostname : ip adress of my computer

SNMP version : SNMP v3

selet credentials : test (as I created it in credentials tab)

PS : I've enabled SNMP agent service on my windows 7

Please help. I need to test in Windows 7 then I'll try to mesure the bandwith on the network.

Thanks in advance for your help