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The IP address you have entered for this network adapter is already assigned to another adapter,it is hidden from the Network Connections folder because it is not physically in the computer.

Posted on 2004-10-13
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Last Modified: 2013-11-09
This is the actual error message I am getting in a WindowsXP system with TCP/IP Networking:
Microsoft TCP/IP

"The IP address 22.255.24.16 you have entered for this network adapter is already
 assigned to another adapter 'Intel 8255x-based PCI Ethernet Adapter (10/100)',
'Intel 8255x-based PCI Ethernet Adapter (10/100)' is hidden from the Network
Connections Folder because it is not physically in the computer. If the same
address is assigned to both adapters and they both become active, only one of
them will use this address. This may result in incorrect system configuration.

Do you want to enter a different IP address For this adapter in the list of IP addresses in the Advanced dialog box?                                                                                                
                                     
                                      YES    or      NO"

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Question by:colm7144
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visualcoat earned 500 total points
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This problem is genrally caused by moving the NIC to a different PCI slot.
To fix the problem:
1. Open a CMD prompt.
2. Type:
    set devmgr_show_nonpresent_devices=1
3. Type:
    Start DEVMGMT.MSC
4. Press View and Show Hidden Devices.
5. Expand the Network Adapters tree.
6. Right-click the ghosted NIC and press Uninstall.
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by:Technicon-SG
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Visualcoats solution will solve the root of the issue...however you should be able to click "no" and continue about your business
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by:colm7144
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  If you click "NO" you cannot ping or do many other activities such as getting on server and internet.
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by:wjc7662
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Technicon-SG is correct.  Clicking NO should allow you to continue using the current settings.  If this is not the case, double-check the settings, make sure there isn't a type-o in the configuration.
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