Installing Multiple 3COM 3C509B PCMCIA Network Interface Cards
ID: Q177313
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The information in this article applies to:
-
Microsoft Windows NT Workstation version 4.0
-
Microsoft Windows NT Server version 4.0
IMPORTANT: This article contains information about editing the registry.
Before you edit the registry, make sure you understand how to restore it if
a problem occurs. For information on how to do this, view the "Restoring
the Registry" online Help topic in Regedit.exe or the "Restoring a Registry
Key" online Help topic in Regedt32.exe.
SYMPTOMS
On a computer that already has one 3COM 3C509B PCMCIA network interface
card (NIC) installed, if you attempt to make the computer multihomed by
installing another identical NIC, the following error message is displayed:
Registry service subkey already exists. Unable to access services subkey
and registry.
As a result, you cannot install a second 3c309B PCMCIA NIC.
CAUSE
There are two entries in the registry that need to be deleted prior to
adding the second 3COM 3C509B NIC.
RESOLUTION
To successfully install two 3COM 3C509B NICs on the same computer, follow
these steps:
WARNING: Using Registry Editor incorrectly can cause serious problems that
may require you to reinstall your operating system. Microsoft cannot
guarantee that problems resulting from the incorrect use of Registry Editor
can be solved. Use Registry Editor at your own risk.
For information about how to edit the registry, view the "Changing Keys And
Values" online Help topic in Registry Editor (Regedit.exe) or the "Add and
Delete Information in the Registry" and "Edit Registry Data" online Help
topics in Regedt32.exe. Note that you should back up the registry before
you edit it.
- Install the MS Loopback Adapter by using the Network tool in Control
Panel.
- Restart the computer.
- Remove the first 3COM 3C509B driver.
- Run Regedt32 and delete the 3COM key entries under the following two
locations:
HKLM\System\CurrentControlSet\Services\Elink3
HKLM\Software\Microsoft\Windows NT\CurrentVersion\NetworkCards
NOTE: There will be one number (1,2,3,...) for each adapter installed.
Open each numbered key, and delete the key that contains the 3COM card
information.
- Restart the computer.
- Install the first and second 3COM 3C509B cards by using the Network tool
in Control Panel.
- Delete the MS Loopback Adapter.
- Restart the computer
Both 3c509B PCMCIA NICs should now be installed and functional.
Additional query words:
multi-homed multiple 3C509
Keywords : kbsetup ntsetup NTSrvWkst
Version : WinNT:4.0
Platform : winnt
Issue type : kbprb