RAS Install Failure After LAN Manager 2.1 Upgrade

ID: Q87136

The information in this article applies to:

Microsoft LAN Manager, versions 2.1, 2.1a

SYMPTOMS

When attempting to install RAS after upgrading to LAN Manager 2.1, an error appears indicating that you must have LAN Manager version 2.1 in order to install the RAS service.

CAUSE

The code used to verify the version of LAN Manager that is installed uses the following logic:


   IF LANMAN.CSD exists
      IF "version" is 2.1+
         THEN its LM2.1+
      ELSE
         IF "version" is 2.0.8+
            THEN it is LM2.0c+

   ELSE
      IF [Version] section exists in LANMAN.INI
         THEN  it is LM 2.1+

This means that if the LANMAN.CSD file is not deleted when a user upgrades to LAN Manager 2.1, the installation will fail.

WORKAROUND

The immediate workaround for customers is to delete the LANMAN.CSD file.

STATUS

Microsoft has confirmed this to be a problem in LAN Manager version 2.1. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: 2.10 prodlm

Keywords :
Version : :2.1,2.1a
Platform :
Issue type :