FATAL ERROR: Server unexpectedly closed network connection in using Plink

Hi,

Could any one please let me know why this error is occuring randomly while using Plink? Some days it works fine and suddenly it stops to work with this error message.

FATAL ERROR: Server unexpectedly closed network connection

I am using below command

"C:\Program Files\PuTTY\plink.exe" -load MyProfile -ssh -x -a -t -l userID HostName Command

Thanks,
Megha