Hi Ronni,
        The restart seems to have done the trick, thank you.  Keep forgetting 
that little trick, when in doubt, shut down, have a cuppa, and try again.

Once again, thank you

Regards

John



> On 29 Nov 2018, at 11:49 am, John Thompson <[email protected]> wrote:
> 
> Hi Ronni and thank you for the input.
> 
>> On 29 Nov 2018, at 10:57 am, Ronni Brown <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>> Hi John,
>> 
>> In System Preferences > Network > Ethernet - what IP address is showing, 
>> does it start with 169?
> 
> IP address on both computers start with 192.
> 
>> Check System Preferences/Network, select the Ethernet, and make sure 
>> Configure IPv4 is set to Using DHCP (not DHCP using manual address). 
> Ipv4 is configured as DHCP
> 
>> Then select Wi-Fi/Advanced/TCP/IP and check for the same thing.
> IPv4 is DHCP and address starts with 192
>> Then Restart your Mac mini and restart your Modem/Router.
> Will now go through the restart process and get back to you with outcome.
>> 
>> Re: Transferring data across the Network between Mac mini & MacBook Pro.
>> 
>> Open System Preferences from the  Apple menu, and click on “Sharing” panel. 
>> Check to enable “File Sharing” on all Macs you want to share files between. 
>> From the OS X Finder, hit Command+Shift+K and then click “Browse” to find 
>> and connect to the desired Mac
>> 
>> Apple has axed the iCloud feature Back to My Mac in Mojave, which made 
>> screen and file sharing possible between two Macs, even when they weren’t on 
>> the same network.
>> 
>> Cheers,
>> Ronni
>> 
>> 13-inch MacBook Air (April 2014)
>> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
>> 8GB 1600MHz LPDDR3 SDRAM
>> 512GB PCIe-based Flash Storage
>> 
>> macOS High Sierra 10.13.6
>> 
>>> On 29 Nov 2018, at 8:56 am, John Thompson <[email protected] 
>>> <mailto:[email protected]>> wrote:
>>> 
>>> Good morning list.
>>> 
>>> I have two computers, a MacMini and a Macbook Pro, both upgraded 
>>> succesfully to Mojave. The MacMini is the main computer and the Macbrook 
>>> Pro is used primarily when travelling.  Up until the upgrade, I have had no 
>>> problems with networking the two machines and transferring required data 
>>> when preparing to travel.  Now, neither machine will see the other, in fact 
>>> the message is ‘unable to connect’.
>>> 
>>> The only disparity I see when comparing the Network settings is on the 
>>> MacMini.  The Ehernet Status is Connected but 'has a self-assigned IP 
>>> address and will not be able to connect to the Internet.’.
>>> 
>>> Does anyone have any idea what the probvlem may be?  I can give further 
>>> data when and if required.
>>> 
>>> Thank you
>>> 
>>> John Thompson
>>> 
>>> 
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>> 
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