This does not apply to version 4.0 of MSoft onwards.
If that happens, the PoissonRecon.exe file must be replaced.
The file is located by default at this location :
C:\Program Files\Qwadra\MSoft\ExternalProcesses\
Rename the existing PoissonRecon.exe to something different. It is recommended to rename it PoissonReconSneaky.exe.
Next up, download this file to replace the PoissonRecon.exe that was renamed
Add the file provided by the link above to where you renamed the previous version of PoisonRecon.exe.
Close the folder. MSoft should work normally. If MSoft still does not work, please contact us for further assistance.