I setup my headless Raspberry PI and called it Optimus. I connect my Windows 10 desktop machine to the Raspberry PI via an ethernet cable. If I ping optimus.local I get a response and can SSH into it - no issues.

Based on the above I am sure my Raspberry PI is configured correctly.

However, from my Windows 10 laptop following the same process as above, does not work (can't ping optimus.local and therefore can't SSH). So clearly, there must be a configuration element of sorts on my laptop that needs to be checked / changed in order for this to work as it does on my desktop machine.

Any ideas what I need to look out for on my laptop? Please advise.

  • what operating systems are running on the non pi's Feb 25, 2019 at 11:33
  • Both are Windows 10 OS that SSH into the PI. Edited my question include Windows 10 description.
    – c0D3l0g1c
    Feb 25, 2019 at 11:37

1 Answer 1


This is not a question belonging to Raspberry Pi. It is a problem with MS Windows. But because it is an often seen problem together with Raspberry Pi I will give a hint.

Raspbian uses a Link-local address if there is no DHCP server present. For these addresses there is a top level DNS domain .local reserved so you can address link-local addresses with this domain, e.g. raspberrypi.local. To manage this there is a service needed, called mDNS (multicast Domain Name Service). Microsoft ignores this specification for a long time and used DNS domain .local for its own interests (for private home networks, e.g. raspberrypi.mshome.com). So it was not possible to address raspberrypi.local with MS Windows.

Only since MS Windows 10 Microsoft has implemented mDNS as you can see with your Desktop PC. If it doesn't run on your Laptop then you should look for the service managing mDNS and link-local addresses. Compare it with your Desktop PC.

  • Thanks for the HINT! I did have Bonjour installed - but it seems that the version I had did not install Bonjour Service. I updated it to version 3, Bonjour Service running and can ping and SSH.
    – c0D3l0g1c
    Feb 25, 2019 at 12:43

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