Upgrading LAN Manager 2.1 to WFWG 3.1 with EtherExpress Card

 Last reviewed: November 21, 1994
Article ID: Q91099
The information in this article applies to:
  • Microsoft Windows for Workgroups version 3.1

SYMPTOMS

When upgrading from Microsoft LAN Manager version 2.1 to Windows for Workgroups version 3.1, Setup uses the default settings for the network card. Windows for Workgroups takes the network card settings used by LAN Manager 2.1, and finds that no setting is specified for the IRQ. Windows for Workgroups then uses the default IRQ for the network card. When the system is restarted, the following message is displayed if the default IRQ is not correct for your machine: 

   Protocol Manager did not accept EtherExpress 16 driver.
   NDIS environment invalid, Driver not loaded.

CAUSE

If Setup detects that LAN Manager 2.1 was previously installed, it attempts to take the safest route of using settings from LAN Manager. Unfortunately, some of the settings used in Windows for Workgroups are not required for LAN Manager, particularly for the EtherExpress card.

WORKAROUND

To correct the problem, use the Network option in Control Panel to adjust the IRQ setting for the card to its proper value.

KBCategory: kbnetwork kbsetup kberrmsg kbinterop kbenv
KBSubcategory: wfw wfwg
Additional reference words: 3.10 lanman

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Last reviewed: November 21, 1994
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