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There are a number of things that can cause this.<br />
<br />
1. DHCP - try using a static settings - IP, Mask, Gateway and DNS<br />
2. Driver - I know some NIC's have driver issues. &nbsp;Try going into device manager and deleting the NIC. Then reboot and let Windows detect and re-install. <br />
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Those are the most common issues for the error.
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There are a number of things that can cause this.

1. DHCP - try using a static settings - IP, Mask, Gateway and DNS
2. Driver - I know some NIC's have driver issues.  Try going into device manager and deleting the NIC. Then reboot and let Windows detect and re-install.

Those are the most common issues for the error.

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It is it a 2013 R2 it should be static. If it isn't you want to change it. Is this server a DNS or DHCP server? Is it a Domain Controller?
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It is it a 2013 R2 it should be static. If it isn't you want to change it. Is this server a DNS or DHCP server? Is it a Domain Controller?

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manual input NIC setting solved problem
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I am getting an error : &quot;ethernet&quot; doesn't have valid IP configuration. I have no internet but internal network is working
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I am getting an error : "ethernet" doesn't have valid IP configuration. I have no internet but internal network is working

Having problem with Server 2012 r

Transmission Control Protocol/Internet Protocol (TCP/IP) is the set of networking protocols that define end-to-end connectivity specifying how data should be packeted, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved.

TCP/IP

The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.