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Microsoft KB Archive/107840

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Knowledge Base

Article ID: 107840

Article Last Modified on 10/28/1999


  • Microsoft Windows for Workgroups 3.11

This article was previously published under Q107840


When you run Windows for Workgroups 3.11 for the first time after installing it on a machine that was previously configured to use IBM LAN Server networking functionality, you may receive the following message:

The protocol manager could not be opened.
The return code is 3.
Error in loading - Press F1 to continue.
Can not find Protocol Manager


This error occurs if any of the following IBM LAN Server components remain in the startup files after you install Windows for Workgroups 3.11 and select Microsoft Windows Network peer-to-peer networking functionality:






If you find the above items in the startup files after installing Windows for Workgroups 3.11 and selecting Microsoft Windows Network peer-to-peer networking functionality, remove them with an ASCII text editor, such as Microsoft Windows Notepad.


When you install Microsoft Windows for Workgroups 3.11, you can choose to install Microsoft Windows Network peer-to-peer networking functionality or Windows client networking functionality for another network (such as IBM LAN Server). If you decide to install the Microsoft Windows Network, any recognized components of other networks found in the startup files are replaced with the equivalent Windows for Workgroups drivers. However, some components, such as the IBM LAN Server components listed above, may not be recognized by Setup and therefore must be manually removed.

Additional query words: 3rdparty err msg 3.11

Keywords: KB107840