Network device can’t be pinged by one computer on network

Topic

New Reply

I have a Win7 desktop (static IP, cable connect) and a Win8 laptop (DHCP, WiFi connect) on my home network. I have a home automation controller assigned a static IP address, which is normally accessed through a browser using either the IP address or device name. I can connect to the controller on the laptop but not the desktop. The desktop used to be able to contact the controller, but something changed over a multi-week period when I did not access the controller.

I can ping the controller on the laptop and get a response. I ping the same address form the desktop and get the message: Reply from 192.168.1.200: Destination host unreachable.

I have flushed the DNS cache and tried just about everything I’ve found researching the problem on the Internet. The tech support person from the controller company spent 30 minutes using Teamviewer and could not figure out the problem. He has a utility program we installed that can find his devices on a network. No luck.

I’ve turned off the firewall on the desktop and even tried accessing from a different user account on the desktop. Something is preventing the desktop from communicating with this device. I removed the desktop from the homegroup.

Any ideas are appreciated.

Reply | Quote

Replies

Have you checked the NIC settings to make sure the desktop is on the same subnet as the laptop?

Joe

--Joe

Reply | Quote

Yes, I confirmed the subnets are the same (255.255.255.0). In addition, I’ve uninstalled and reinstalled TCP/IP and even reset the stack. The Win7 desktop does not have any problems seeing the Win8 machine, my NAS and my WiFi printer.

Reply | Quote

Mike
How is the automation device connected?
Can you ping the laptop and printer from the desktop??

Just because you don't know where you are going doesn't mean any road will get you there.

Reply | Quote

As they are both static IP, try connecting a cable directly between the desktop and the controller. If that doesn’t work, change the desktop IP to the one used by the laptop and try again. (I assume your desktop has an IP in the range 192.168.1.x?)

cheers, Paul

Reply | Quote

Hi Mike,
One Quick thing you can try which I often find is a quick fix when all else fails is “Rizones complete Internet repair” prog, download here

http://download.cnet.com/Complete-Internet-Repair/3000-2094_4-75332305.html
or here
http://www.majorgeeks.com/files/details/complete_internet_repair.html

Run all boxes and see if fixes your problem. It may not but sometimes it maybe something simple as a setting we all overlook.

cheers, Pete.

Reply | Quote