Insufficient Quota to complete the requested service

This error occurs when the user system's memory utilization is full at capacity. You can also check this in Connect Tunnel logs :
It will be shown as Error code [1453]

To resolve this error of Insufficient Quota to complete the requested service , Reboot the user system and check in Task manager for the application consuming highest memory and close the application or set priority of application as low .
Once the memory utilization gets to normal , the connect tunnel error will be fixed.