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Any IP datagram with a source or destination address set to a loopback address must not appear outside of a computing system, or be routed by any routing device. Packets received on an interface with a loopback destination address must be dropped. The loopback device is a special, virtual network interface that your computer uses to communicate with itself. It is used mainly for diagnostics and troubleshooting, and to connect to servers running on the local machine. The Purpose of Loopback. When a network interface is disconnected-for example, when an Ethernet port is unplugged or Wi-Fi is turned off or not associated with an access.
This article describes how to install the Microsoft Loopback Adapter.
Original product version: Windows Server 2003
Original KB number: 842561
Original KB number: 842561
Introduction
This article describes how to install the Microsoft Loopback Adapter in Microsoft Windows Server 2003. You can install the adapter by using a command prompt or by using the Hardware Wizard.
More information
Method 1
To quickly install the Microsoft Loopback Adapter in Microsoft Windows Server 2003, use the DevCon utility at a command prompt. To download and to run the DevCon utility, follow these steps:
- Download the DevCon compressed file, and then extract the files:
- Visit the following Microsoft Web site:
https://download.microsoft.com/download/1/1/f/11f7dd10-272d-4cd2-896f-9ce67f3e0240/devcon.exe - Save the Devcon.exe file to a folder on your computer, and then open the folder.
- Double-click Devcon.exe. A WinZip Self-Extractor dialog box appears.
- In the Unzip to path box, type the folder where you want to unzip the files, and then click Unzip.
- Click OK, and then Close to complete the unzip process.
- Install the Microsoft Loopback Adapter:
- At a command prompt, change directory to the folder where you extracted the DevCon files.
- Change directory to the i386 folder.
- Type devcon.exe install %windir%infnetloop.inf *msloop, and then press ENTER. You see output that is similar as:
Device node created. Install is complete when drivers are updated..
Updating drivers for *msloop from C:WINDOWSinfnetloop.inf.
Drivers updated successfully. - Close the command prompt.
- Click Start, click Control Panel, and then click Network Connections to verify that the Microsoft Loopback Adapter has been installed.
Method 2
To install the Microsoft Loopback Adapter by using the Hardware Wizard, follow these steps:
- In Control Panel, double-click Add Hardware, and then clickNext
- Click Yes, I have already connected the hardware, and then clickNext.
- At the bottom of the Installed hardware list, click Add a new hardware device, and then click Next.
- Click Install the hardware that I manually select from a list, and then click Next
- In the Common hardware types list, click Network adapters, and then click Next.
- In the Manufacturers list box, click Microsoft.
- In the Network Adapter list box, click Microsoft Loopback Adapter, and then click Next.
- Click Next to start installing the drivers for your hardware.
- Click Finish.
- Click Start, click Settings, and then click Network Connections to verify that the Microsoft Loopback Adapter has been installed.
References
For additional information about the DevCon utility, click the following article number to view the article in the Microsoft Knowledge Base:
311272 DevCon command-line utility alternative to Device Manager
When you install a loopback adapter, the loopback adapter assigns a local IP address for your computer.
After the loopback adapter is installed, there are at least two network adapters on your computer: your own network adapter and the loopback adapter. To run Oracle Database on Windows, set the loopback adapter as the primary adapter.
You can change the bind order for the adapters without reinstalling the loopback adapter. The bind order of the adapters to the protocol indicates the order in which the adapters are used. When the loopback adapter is used first for the TCP/IP protocol, all programs that access TCP/IP first probe the loopback adapter. The local address is used for tools, such as Oracle Enterprise Manager. Any other applications that use a different Ethernet segment are routed to the network card.
A loopback adapter is required if:
- You are installing on a non-networked computer and plan to connect the computer to a network after installation.
- Checking if a Loopback Adapter is Installed on Your Computer
To check if a loopback adapter is installed on your computer, run theipconfig /all
command: - Installing a Loopback Adapter on Windows 7
Use this procedure to install a loopback adapter on Windows 7. - Installing Microsoft KM-TEST Loopback Adapter on Windows 8, Windows 8.1, Windows Server 2012, and Windows Server 2012 R2
Use this procedure to install Micrsoft KM-TEST loopback adapter on different Windows versions. - Removing a Loopback Adapter
Use this procedure to remove a loopback adapter.
Related Topics
Checking if a Loopback Adapter is Installed on Your Computer
To check if a loopback adapter is installed on your computer, run the
ipconfig /all
command: Note:
Loopback Adapter installed on the computer must be made the Primary Network Adapter.
If there is a loopback adapter installed, then see a section that lists the values for the loopback adapter. For example:
Installing a Loopback Adapter on Windows 7
Use this procedure to install a loopback adapter on Windows 7.
To install a loopback adapter on Windows 7:
Loopback Ip 127
- Click Start and enter
hdwwiz
in the Search box. - Click hdwwiz to start the Add Hardware wizard.
- In the Welcome window, click Next.
- In the The wizard can help you install other hardware window, select Install the hardware that I manually select from a list, and click Next.
- From the list of hardware types, select the type of hardware you are installing, select Network adapters, and click Next.
- In the Select Network Adapter window, make the following selections:
- Manufacturer: Select Microsoft.
- Network Adapter: Select Microsoft Loopback Adapter.
- Click Next.
- In the The wizard is ready to install your hardware window, click Next.
- In the Completing the Add Hardware Wizard window, click Finish.
- Click Manage Network Connections. This displays the Network Connections Control Panel item.
- Right-click the connection that was just created. This is usually named 'Local Area Connection 2'. Choose Properties.
- On the General tab, select Internet Protocol (TCP/IP), and click Properties.
- Ableton 9.7.2 mac crack keygen password. In the Properties dialog box, click Use the following IP address and do the following:
- IP Address: Enter a non-routable IP for the loopback adapter. Oracle recommends the following non-routable addresses:
192.168.
x
.x
(x
is any value between 0 and 255)10.10.10.10
- Subnet mask: Enter
255.255.255.0
. - Record the values you entered, which you need later in this procedure.
- Leave all other fields empty.
- Click OK.
- Click Close.
- Close Network Connections.
- Restart the computer.
- Add a line to the
DRIVE_LETTER
: WINDOWSsystem32driversetchosts
file with the following format, after thelocalhost
line:where:IP_address
is the non-routable IP address you entered in step 13.hostname
is the name of the computer.domainname
is the name of the domain.
For example: - Check the network configuration:
- Open System in the Control Panel, and verify that Full computer name displays the host name and the domain name, for example,
sales.us.example.com
. - Click Change. In Computer name, you must see the host name, and in Full computer name, you must see the host name and domain name. Using the previous example, the host name is now
sales
and the domain nameus.example.com
. - Click More. In Primary DNS suffix of this computer, you must see the domain name, for example,
us.example.com
.
Installing Microsoft KM-TEST Loopback Adapter on Windows 8, Windows 8.1, Windows Server 2012, and Windows Server 2012 R2
Use this procedure to install Micrsoft KM-TEST loopback adapter on different Windows versions.
To install a loopback adapter on Windows 8, Windows 8.1, Windows Server 2012, or Windows Server 2012 R2, perform the following steps:
- Open the Windows Control Panel.
- Double-click Add Hardware to start the Add Hardware wizard.
- In the Welcome window, click Next.
- In the The wizard can help you install other hardware window, select Install the hardware that I manually select from a list, and click Next.
- From the list of hardware types, select the type of hardware you are installing, select Network adapters, and click Next.
- In the Select Network Adapter window, make the following selections:
- Network Adapter: Select Microsoft KM-TEST Loopback Adapter.
Then continue with the same steps as given for Windows Server 2008.
Loopback Ip Address
Removing a Loopback Adapter
Use this procedure to remove a loopback adapter.
Loopback Ipv4
To remove a loopback adapter, perform the following steps:
Loopback Ip Address
- Display System in the Windows Control Panel.
- In the Hardware tab, click Device Manager. This tab is not available with Windows Server 2008. Click Device Manager instead.
- In the Device Manager window, expand Network adapters. You must see Microsoft Loopback Adapter.
- Right-click Microsoft Loopback Adapter and select Uninstall. In Windows 8, Windows 8.1, Windows Server 2012, or Windows Server 2012 R2, right-click Microsoft KM-TEST Loopback Adapter and select Uninstall.
- Click OK.
- Restart the computer.
- Remove the line from the
DRIVE_LETTER:
WINDOWSsystem32driversetchosts
file, added after the localhost line while installing the loopback adapter on other Windows operating systems.