Editing LAN Manager (section)

==History==
The LAN Manager [[OS/2]] operating system was co-developed by [[IBM]] and [[Microsoft]], using the [[Server Message Block]] (SMB) protocol. It originally used SMB atop either the [[NetBIOS Frames]] (NBF) protocol or a specialized version of the [[Xerox Network Systems]] (XNS) protocol. These legacy protocols had been inherited from previous products such as [[MS-Net]] for [[MS-DOS]], [[Xenix-NET]] for [[Xenix|MS-Xenix]], and the afore-mentioned 3+Share. A version of LAN Manager for Unix-based systems called '''LAN Manager/X''' was also available. LAN Manager/X was the basis for [[Digital Equipment Corporation]]'s [[Pathworks]] product for [[OpenVMS]], [[Ultrix]] and [[Tru64]].<ref name="samba">{{cite web|url=http://de.openvms.org/TUD2005/02_Advanced_Server_and_Samba_Andy_Goldstein.pdf|title=Samba and OpenVMS|author=Andy Goldstein|date=2005|access-date=January 1, 2021|website=de.openvms.org|archive-url=https://web.archive.org/web/20210207063545/http://de.openvms.org/TUD2005/02_Advanced_Server_and_Samba_Andy_Goldstein.pdf|archive-date=February 7, 2021|url-status=dead}}</ref>

Despite support from 3Com, IBM, Digital, and [[Digital Communications Associates]], ''[[PC (magazine)|PC]]'' wrote in 1989, LAN Manager "has made a very small impression on the market and continues to receive the cold shoulder from buyers" compared to [[Novell NetWare]]. The combined companies "pose a strong potential threat", however, the magazine added.<ref name="pc19891212">{{Cite magazine |last=Derfler |first=Frank J. Jr. |last2=Thompson |first2=M. Keith |date=1989-12-12 |title=Novell's NetWare 386 |url=https://books.google.com/books?id=5CmkZ3THZtwC&pg=PT206#v=onepage&q&f=true |access-date=2025-05-02 |magazine=PC Magazine |page=205 |volume=8 |issue=21}}</ref> In 1990, Microsoft announced LAN Manager 2.0 with a host of improvements, including support for [[TCP/IP]] as a transport protocol for SMB, using [[NetBIOS over TCP/IP]] (NBT). The last version of LAN Manager, 2.2, which included an MS-OS/2 1.31 base operating system, remained Microsoft's strategic server system until the release of [[Windows NT 3.1|Windows NT Advanced Server]] in 1993.<ref>{{Cite web |title=DOS SMB Client Performance {{!}} OS/2 Museum |url=https://www.os2museum.com/wp/dos-smb-client-performance/ |access-date=August 28, 2023 |language=en-US}}</ref>

===Versions===
* 1987 – MS LAN Manager 1.0 (Basic/Enhanced)
* 1989 – MS LAN Manager 1.1
* 1991 – MS LAN Manager 2.0
* 1992 – MS LAN Manager 2.1
* 1992 – MS LAN Manager 2.1a
* 1993 – MS LAN Manager 2.2
* 1994 – MS LAN Manager 2.2a

Many vendors shipped licensed versions, including:
* [[3Com|3Com Corporation]] [[3+Open]]
* [[HP LAN Manager/X]]
* [[IBM LAN Server]]
* [[Tapestry Torus]]
* [[Santa Cruz Operation|The Santa Cruz Operation]]