Unidentified network" with Server 2012 R2 and windows 8- Domain & NIC teaming

i have problem with my network ,before that i had just my domain but now some servers specially win 2012 detect a network (name:network 4)
my 2012 windows server cannot be joined to doman also windows 8,but sometimes this problem solves without any troubleshooting and i can join again
what can be problem
S.Sanadi

Hi S.Sanadi,
According to your description, my understanding is that “Unidentified Network” causes problem with joining domain, and this problem will be resolved automatically.
If there is no default gateway or the default gateway is useless, the network will be identified as unknown. Check to see if the IP configuration is correct when the network identified unknown. Open command prompt and type:
Ipconfig /all
If the parameter is correct, try to ping IP address of default gateway and check to see if it works well.
Besides, if the connection should be identified as a Domain network and is not, then the likely causes are failure to contact DNS servers or domain controllers on that interface. Ping the IP address of DNS server and DC to make sure that these resources
are available.
Regards,
Eve Wang

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I suppose then, you would have to install Windows 8 and Hyper-V as your guest or core.
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What good is it if your can't run Hyper-V and Remote desktop services? Those are the two apps small business need most. But Microsoft strips it out, calls it a DEAL (Essentials and Foundation) , yet if you want the good stuff, you're gonna
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So you are hooked into this "deal" by Microsoft Special Offer. Its special alright, because you get to buy it twice. The stripped down version that come with your server, then the full version when you discover Foundatoin and Essentials gives
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You cannot load Exchange on a DC, or Foundation or Essentials
You cannot load Exchange and RDP on the same box.
You cannot have Remote Web Apps if you load RDP on your DC.
You cannot win with Microsoft. No worthwhile "deal" has ever come out of the city of Redmond.
The internet is a one-way money pipeline to Microsoft.
Its three times the work, three times the cost and requires three servers licenses to do with 2012, what you could do with one 2008R2 license.
Might as well purchase 2 Server 2013 Standard Editions if you want:
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Why bother with Foundation or Essentials? Its a "Gimmick-ware"

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