ETAS
ES441.1 - User Guide
86
7.3
Problems and Solutions
7.3.1
Network Adapter Cannot Be Selected via Network Manager
Cause: APIPA is disabled
The alternative mechanism for IP addressing (APIPA) is usually enabled on all
Windows 7, 8.1 and 10 systems. Network security policies, however, may
request the APIPA mechanism to be disabled. In this case, you cannot use a
network adapter which is configured for DHCP to access ETAS hardware. The
ETAS Network Manager displays a warning message.
The APIPA mechanism can be enabled by editing the Windows registry. This is
permitted only to users who have administrator privileges. It should be done
only in coordination with your network administrator.
To enable the APIPA mechanism:
1. Open the Registry Editor:
- Windows 7, 8.1:
1.1 Click on the Windows symbol.
1.2 Enter
regedit
in the entry field.
1.3 Push <E
NTER
>.
- Windows 10:
1.1 Rightclick on the Windows symbol.
1.2 Click on
Search
.
1.3 Enter
regedit
in the entry field.
1.4 Push <E
NTER
>.
The registry editor is displayed.
2. Open the folder
HKEY_LOCAL_MACHINE\SYSTEM\
CurrentControlSet\Services\
Tcpic\Parameters\
3. Click
Edit
Find
to search for the key
IPAutoconfigurationEnabled
.
If you cannot find any instances of the registry key mentioned, the APIPA mech
-
anism has not been disabled on your system. i.e. there is no need to enable it.
Otherwise proceed with the following steps:
4. Set the value of the key
IPAutoconfiguratio-nEnabled
to
1
to enable the APIPA mechanism.
You may find several instances of this key in the Windows reg
-
istry which either apply to the TCP/IP service in general or to a
specific network adapter. You only need to change the value
for the corresponding network adapter.
5. Close the registry editor.
6. Restart your workstation in order to make your changes take
effect.
