SOLVED IP reverts to Fixed

[Delta624826]

I have several laptops. All are running on Windows 10. Most are under a domain from my Server 2016 Essentials.

All is well and good at home. When I attempt a connection elsewhere, I am unable to connect to the Internet. I do connect to whatever mobile sever (Starbucks, etc) but I do not connect to the Internet.

I found that Ipv4 is seeking a default DNS server that just happens to be house server for Server 2016 Essential.
I have "flushed" the IP stack.
I have manually reset Ipv4 to "Obtain an IP dynamically.
I have deleted 192.168.1.10 for the advanced DNS Lookup.

EVERY time I reboot it all goes back to 192.168.1.10 !

Any ideas. Grandchild is have fits connecting to the Internet at school.

A manual reset temporarily allow Internet access. It will NOT keep that setting!

Thank you

 

[Tim Locke]

Who is providing IP info to the laptops? The server or the router?

 

[Delta624826]

The server, I believe. Router is .254

 

[Tim Locke]

I have been thinking about this. I personally have never worked with a domain....11 years ago I had 'my people' to do that stuff.

Seems to me that the individual workstations should be getting their DHCP info ( ip, mask, dns, gateway) from the router. If the domain server is the router then it should, I think just be passing that stuff through OR it should set the DNS that it passes through a real DNS ( I use 8.8.8.8 and 2001:4680:4680::8888) or, if you have bought a domain name do they supply public DNS?

If you are using a commercial fiirewall between your router and domain server or if you are trying to provide a protected internet environment then you need a better and more uptodate network guy than me.

 

[Delta624826]

Thanks to all.
Yes, the router is 198.162.1.254 and yes, the server has taken over this function in Server 2016 Essentials.
All is well if I am at home. On the go, a fixed IP will not get me Internet.

That said, one of the (many, many) MS upgrades (and updates) probably caused this malady.
I finally gave up and restored an image from 25 May.
After 6 hours of updates and workarounds, the laptop works as it should.

Moral of the story is to keep backups (in depth).