Editing Windows NT 3.51 (section)

{{Short description|Third major release of Windows NT, released in 1995}}
{{Use mdy dates|date=January 2020}}
{{Infobox OS
| name = Windows NT 3.51
| version of = [[Windows NT]]
| logo = Microsoft Windows NT 3.1 logo with wordmark.svg
| logo size = x110px
| logo caption = 
| screenshot = Windows NT 3.51.png
| caption = 
| developer = Microsoft
| website = 
| source_model = [[Closed source software|Closed source]]
| license = [[Commercial software|Commercial]] [[proprietary software]]
| supported_platforms = [[IA-32]], [[DEC Alpha|Alpha]], [[MIPS architecture|MIPS]], [[PowerPC]]
| kernel_type = [[Hybrid kernel|Hybrid]]
| userland = [[Windows API]], [[NTVDM]], [[Microsoft OS/2 subsystem|OS/2 1.x]], [[Microsoft POSIX subsystem|POSIX.1]]
| preceded_by = [[Windows NT 3.5]] (1994)
| succeeded_by = [[Windows NT 4.0]] (1996)
| first_release_date = 
| first_release_url = 
| GA_date = {{Start date and age|1995|5|30}}<ref name="reldates" />
| release_version = Service Pack 5 (3.51.1057.6)
| release_date = {{Start date and age|1996|9|19}}<ref name="reldates">{{cite web|last1=Adams|first1=Paul|title=Windows NT History|url=https://blogs.technet.microsoft.com/mrsnrub/2009/08/04/windows-nt-history/|website=Microsoft Build |date=August 4, 2009 | archive-url=https://web.archive.org/web/20091130223223/http://blogs.technet.com/mrsnrub/archive/2009/08/04/windows-nt-history.aspx | archive-date=November 30, 2009 | url-status=live}}</ref>
| marketing target = Business and Server
| support_status = {{Infobox
 |child=yes
 |label1=Server
 |data1=Mainstream support ended on September 30, 2000<ref name="NT3.51Sup"/><br />Extended support ended on September 30, 2002<ref name="NT3.51Sup">{{cite web
  |title=Microsoft Support Lifecycle for Windows NT 3.51
  |url=https://support.microsoft.com/en-us/lifecycle/search?alpha=windows%20NT%203.51
  |publisher=Microsoft |access-date=January 15, 2019}}</ref>
 |label2=Workstation
 |data2=Mainstream support ended on December 31, 2000<ref name="NT3.51Sup"/><br />Extended support ended on December 31, 2001<ref name="NT3.51Sup"/><br />
 }}
}}
'''Windows NT 3.51''' is the third major release of the [[Windows NT]] [[operating system]], developed by [[Microsoft]] for the data server and personal workstation markets.<ref><nowiki>https://dspace.qau.edu.pk:8080/jspui/bitstream/123456789/29833/1/COM</nowiki> 1354.pdf</ref> It was released on May 30, 1995, eight months following the release of [[Windows NT 3.5]]. The most significant enhancement offered in this release was that it provides [[client/server]] support for inter-operating with [[Windows 95]], which was released almost three months after NT 3.51. [[Windows NT 4.0]] became its successor a year later. Mainstream support for Windows NT 3.51 Workstation ended on December 31, 2000,<ref name="NT3.51Sup"/> and extended support ended on December 31, 2001,<ref name="NT3.51Sup"/> while Windows NT 3.51 Server mainstream support ended on September 30, 2000,<ref name="NT3.51Sup"/> followed by extended support on September 30, 2002.<ref name="NT3.51Sup"/> Both editions were succeeded by [[Windows NT 4.0]] Workstation and Windows NT 4.0 Server, respectively.