Install Microsoft Loopback adapter

TXSeries CICS depends on DCE services for communications, security and naming. DCE requires an active network adapter on the system. When no active adapters are present on the system, DCE cannot deliver packets. The problem appears on Windows systems when network cards switch to inactive status when the network cable is disconnected.

UNIX systems have loopback adapters configured by default as part of the network card configuration which eliminate the condition on those systems. Loopback adapters under Windows have to be configured manually.

The following instructions describe how to install and configure a Windows system to allow TXSeries CICS to function without an active network connection.

Installation

1. Go to Start > Settings > Control Panel > Add Hardware
2. Click Next.
3. Select Yes, I have already connected the hardware and click Next.
4. From the list select Add a new hardware device and click Next.
5. Select Install the hardware that I manually select from a list (Advanced) and click Next.
6. From the list select Network Adapters and click Next.
7. Select Manufacturers: Microsoft: Microsoft Loopback Adapter and click Next.
8. Click next and Click Finish.
9. 
   

Windows 10

1. Go to Device Manager (Right click the windows icon (bottom left icon) and select Device Manager. 
2. In Device Manager window, right-click the topmost icon and select Add legacy hardware
3. In the Add Hardware window, click Next button
4. Select Install the hardware that I manually select from a list (Advanced) and click Next button.
5. In the Add Hardware window,  select Network adapters and click Next button.
6. In the Add Hardware window,  select Microsoft (left column), select Microsoft KM-TEST Loopback Adapter (right column) and click Next button.
7. In the Add Hardware window, click Next button to start installation.
8. In the Add Hardware window, click Finish button to close the wizard.

Configuration

1. Go to Start > Settings > Network Connections.
2. Right click the connection for the Microsoft Loopback adapter and select Properties.
3. On the General tab, click Configure.
4. Select the Advanced tab.
5. Select Network Address in the Property field.
6. Enter 127.0.0.1 in the Value field and click OK.
7. Right click the connection for the Microsoft Loopback adapter again and select Properties.
8. On the General tab, Select Internet Protocol (TCP/IP) and click Properties.
9. Select Use The Following IP Address: Enter 192.168.0.1 for the IP Address (this is a non-routable IP address) and enter 255.255.255.0 for the Subnet Mask.
10. Click OK and Click OK.