- First of all check the NIC that is it is working properly or not.
- Check the Cable connectivity.
- Check the IP of both the system, both system IP must be same
- Check the Firewall, Firewall must be off
- Check the time zone for both the system, it must be same
- Check that the system which we want to accessing, it must have a user password
- If it is not accessing yet now, restart the system
