Difference between revisions of "Windows 95"

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The first two builds known to exist are the Usability Testing Builds from January 1993, seen in a Microsoft video.<ref>http://channel9.msdn.com/posts/Windows-95-Usability-Testing-1993</ref> The first leaked build is 58s, known as PDK/M4 from August 1993, followed by 73f and 73g (PDK2/M5 from November 1993), 81 (January 1994), 90c (March 1994), and finally beta 1 builds 99, 116 and 122 (May 1994), beta 2 (October 1994) and RC (throughout 1995).
 
The first two builds known to exist are the Usability Testing Builds from January 1993, seen in a Microsoft video.<ref>http://channel9.msdn.com/posts/Windows-95-Usability-Testing-1993</ref> The first leaked build is 58s, known as PDK/M4 from August 1993, followed by 73f and 73g (PDK2/M5 from November 1993), 81 (January 1994), 90c (March 1994), and finally beta 1 builds 99, 116 and 122 (May 1994), beta 2 (October 1994) and RC (throughout 1995).
  
==Builds==
+
== Builds ==
 
{{builds legend}}
 
{{builds legend}}
===Pre-Chicago===
+
=== Pre-Chicago ===
 
{{BLItem Fake|Windows 95 build 28|3.2.028}}
 
{{BLItem Fake|Windows 95 build 28|3.2.028}}
 
{{BLItem Unconfirmed|Windows 95 build 33|3.2.033}}
 
{{BLItem Unconfirmed|Windows 95 build 33|3.2.033}}
  
===Pre-Milestone 4===
+
=== Pre-Milestone 4 ===
 
{{BLItem Fake|Windows 95 build 15b|4.00.15b}}
 
{{BLItem Fake|Windows 95 build 15b|4.00.15b}}
 
{{BLItem Fake|Windows 95 build 21i|4.00.21i}}
 
{{BLItem Fake|Windows 95 build 21i|4.00.21i}}
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{{BLItem Confirmed|Windows 95 build 57|4.00.57}}
 
{{BLItem Confirmed|Windows 95 build 57|4.00.57}}
  
===Milestone 4===
+
=== Milestone 4 ===
 
{{BLItem Confirmed|Windows 95 build 58g|4.00.58g}}
 
{{BLItem Confirmed|Windows 95 build 58g|4.00.58g}}
 
{{BLItem Confirmed|Windows 95 build 58s|4.00.58s (PDK/M4)}}
 
{{BLItem Confirmed|Windows 95 build 58s|4.00.58s (PDK/M4)}}
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{{BLItem Confirmed|Windows 95 build 70|4.00.70}}
 
{{BLItem Confirmed|Windows 95 build 70|4.00.70}}
  
===Milestone 5===
+
=== Milestone 5 ===
 
{{BLItem Fake|Windows 95 build 73|4.00.73}}
 
{{BLItem Fake|Windows 95 build 73|4.00.73}}
 
{{BLItem Confirmed|Windows 95 build 73f|4.00.73f}}
 
{{BLItem Confirmed|Windows 95 build 73f|4.00.73f}}
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{{BLItem Confirmed|Windows 95 build 87|4.00.87}}
 
{{BLItem Confirmed|Windows 95 build 87|4.00.87}}
  
===Beta 1/Milestone 6===
+
=== Beta 1/Milestone 6 ===
 
{{BLItem Confirmed|Windows 95 build 89|4.00.89}}
 
{{BLItem Confirmed|Windows 95 build 89|4.00.89}}
 
{{BLItem Confirmed|Windows 95 build 89e|4.00.89e}}
 
{{BLItem Confirmed|Windows 95 build 89e|4.00.89e}}
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{{BLItem Confirmed|Windows 95 build 197|4.00.197}}
 
{{BLItem Confirmed|Windows 95 build 197|4.00.197}}
  
===Beta 2/Milestone 7===
+
=== Beta 2/Milestone 7 ===
 
{{BLItem Confirmed|Windows 95 build 216|4.00.216}}
 
{{BLItem Confirmed|Windows 95 build 216|4.00.216}}
 
{{BLItem Confirmed|Windows 95 build 222|4.00.222}}
 
{{BLItem Confirmed|Windows 95 build 222|4.00.222}}
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{{BLItem Confirmed|Windows 95 build 337|4.00.337}}
 
{{BLItem Confirmed|Windows 95 build 337|4.00.337}}
  
===Beta 3/Milestone 8===
+
=== Beta 3/Milestone 8 ===
 
{{BLItem Confirmed|Windows 95 build 342|4.00.342}}
 
{{BLItem Confirmed|Windows 95 build 342|4.00.342}}
 
{{BLItem Confirmed|Windows 95 build 345|4.00.345}}
 
{{BLItem Confirmed|Windows 95 build 345|4.00.345}}
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{{BLItem Confirmed|Windows 95 build 474|4.00.474}}
 
{{BLItem Confirmed|Windows 95 build 474|4.00.474}}
  
===Release Candidate 1===
+
=== Release Candidate 1 ===
 
{{BLItem Confirmed|Windows 95 build 480|4.00.480}}
 
{{BLItem Confirmed|Windows 95 build 480|4.00.480}}
 
{{BLItem Fake|Windows 95 build 481|4.00.481}}
 
{{BLItem Fake|Windows 95 build 481|4.00.481}}
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{{BLItem Unconfirmed|Windows 95 build 502|4.00.502}}
 
{{BLItem Unconfirmed|Windows 95 build 502|4.00.502}}
  
===Far-East Betas===
+
=== Far-East Betas ===
 
{{BLItem Confirmed|Windows 95 build 708|4.00.708}}
 
{{BLItem Confirmed|Windows 95 build 708|4.00.708}}
 
{{BLItem Confirmed|Windows 95 build 720|4.00.720}}
 
{{BLItem Confirmed|Windows 95 build 720|4.00.720}}
  
===Middle-East Betas===
+
=== Middle-East Betas ===
 
{{BLItem Confirmed|Windows 95 build 810|4.00.810}}
 
{{BLItem Confirmed|Windows 95 build 810|4.00.810}}
 
{{BLItem Confirmed|Windows 95 build 812|4.00.812}}
 
{{BLItem Confirmed|Windows 95 build 812|4.00.812}}
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{{BLItem Unconfirmed|Windows 95 build 852|4.00.852}}
 
{{BLItem Unconfirmed|Windows 95 build 852|4.00.852}}
  
===Pre-RTM===
+
=== Pre-RTM ===
 
{{BLItem Confirmed|Windows 95 build 950 r-2|4.00.950 r-2}}
 
{{BLItem Confirmed|Windows 95 build 950 r-2|4.00.950 r-2}}
 
{{BLItem Confirmed|Windows 95 build 950 r-3|4.00.950 r-3}}
 
{{BLItem Confirmed|Windows 95 build 950 r-3|4.00.950 r-3}}
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{{BLItem Unconfirmed|Windows 95 build 950 r-5|4.00.950 r-5}}
 
{{BLItem Unconfirmed|Windows 95 build 950 r-5|4.00.950 r-5}}
  
===Release to Manufacturing (RTM)===
+
=== Release to Manufacturing (RTM) ===
 
{{BLItem Confirmed|Windows 95 build 950 r-6|4.00.950 r-6}}
 
{{BLItem Confirmed|Windows 95 build 950 r-6|4.00.950 r-6}}
 
{{BLItem Confirmed|Windows 95 build 950 r-7|4.00.950 r-7 (Hebrew RTM)}}
 
{{BLItem Confirmed|Windows 95 build 950 r-7|4.00.950 r-7 (Hebrew RTM)}}
  
===OEM Service Release 1 and Service Pack 1===
+
=== OEM Service Release 1 and Service Pack 1 ===
 
{{BLItem Confirmed|Windows 95 build 950a|4.00.950a}}
 
{{BLItem Confirmed|Windows 95 build 950a|4.00.950a}}
  
===OEM Service Release 2===
+
=== OEM Service Release 2 ===
====Beta====
+
==== Beta ====
 
{{BLItem Confirmed|Windows 95 build 990|4.00.990}}
 
{{BLItem Confirmed|Windows 95 build 990|4.00.990}}
 
{{BLItem Confirmed|Windows 95 build 1009|4.00.1009}}
 
{{BLItem Confirmed|Windows 95 build 1009|4.00.1009}}
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{{BLItem Confirmed|Windows 95 build 1089|4.00.1089}}
 
{{BLItem Confirmed|Windows 95 build 1089|4.00.1089}}
  
====Release Candidate====
+
==== Release Candidate ====
 
{{BLItem Confirmed|Windows 95 build 1094|4.00.1094}}
 
{{BLItem Confirmed|Windows 95 build 1094|4.00.1094}}
{{BLItem Unconfirmed|Windows 95 build 1095|4.00.1095}}
 
 
{{BLItem Confirmed|Windows 95 build 1111 (RC)|4.00.1111 (RC)}}
 
{{BLItem Confirmed|Windows 95 build 1111 (RC)|4.00.1111 (RC)}}
  
====RTM====
+
==== RTM ====
 
{{BLItem Confirmed|Windows 95 build 1111|4.00.1111 (950 B)}}
 
{{BLItem Confirmed|Windows 95 build 1111|4.00.1111 (950 B)}}
  
===OEM Service Release 2.1===
+
=== OEM Service Release 2.1 ===
====Beta====
+
==== Beta ====
 
{{BLItem Confirmed|Windows 95 build 1107|4.03.1107}}
 
{{BLItem Confirmed|Windows 95 build 1107|4.03.1107}}
 
{{BLItem Confirmed|Windows 95 build 1113|4.03.1113}}
 
{{BLItem Confirmed|Windows 95 build 1113|4.03.1113}}
{{BLItem Unconfirmed|Windows 95 build 1115|4.03.1115}}
 
 
{{BLItem Confirmed|Windows 95 build 1132|4.03.1132}}
 
{{BLItem Confirmed|Windows 95 build 1132|4.03.1132}}
 
{{BLItem Confirmed|Windows 95 build 1154|4.03.1154}}
 
{{BLItem Confirmed|Windows 95 build 1154|4.03.1154}}
 
{{BLItem Confirmed|Windows 95 build 1156|4.03.1156}}
 
{{BLItem Confirmed|Windows 95 build 1156|4.03.1156}}
  
====Release Candidate====
+
==== Release Candidate ====
 
{{BLItem Confirmed|Windows 95 build 1163|4.03.1163}}
 
{{BLItem Confirmed|Windows 95 build 1163|4.03.1163}}
  
====RTM====
+
==== RTM ====
 
{{BLItem Confirmed|Windows 95 build 1212|4.03.1212 (950 B)}}
 
{{BLItem Confirmed|Windows 95 build 1212|4.03.1212 (950 B)}}
 
{{BLItem Confirmed|Windows 95 build 1214|4.03.1214 (950 B)}}
 
{{BLItem Confirmed|Windows 95 build 1214|4.03.1214 (950 B)}}
  
===OEM Service Release 2.5===
+
=== OEM Service Release 2.5 ===
 
{{BLItem Confirmed|Windows 95 build 1216|4.03.1216 (950 C)}}
 
{{BLItem Confirmed|Windows 95 build 1216|4.03.1216 (950 C)}}
  
 
==References==
 
==References==
 
<references></references>
 
<references></references>

Revision as of 15:42, 23 May 2020

Windows 95
Version of Microsoft Windows
Windows95-RTM-Desktop.png
OS familyWindows 9x
Version4.00 (Pre-M4 to OSR 2), 4.03 (OSR 2.1 to 2.5)
CodenameChicago
Preliminary name
Architecturex86
Latest build4.03.1216 (OSR 2.5)
Release date1995-08-24
Support end2001-12-31
Replaces
Windows 3.1x
Replaced by
Windows 98

Windows 95 (codenamed Chicago) is a consumer version of Windows released by Microsoft. It was designed to be the successor of Windows 3.1 and would be replaced by Windows 98. Microsoft ended support for Windows 95 on 2001-12-31. It improved upon 16-bit Windows by introducing a hybrid 16/32-bit kernel and eliminating the need for an existing installation of MS-DOS, making it a standalone operating system (running alongside MS-DOS). Microsoft focused on improving the usability of Windows with technologies such as Plug-and-Play, long file names (VFAT), the Start Menu, an updated Desktop, Internet Explorer and Mail, built-in networking, and virtual device drivers. Many of the paradigms introduced with Windows 95 still remain in use today.

It was a revolutionary update for Windows, and also the first concerted effort by Microsoft to listen to consumers. Although it was still built upon the solid, if out-dated, foundations of MS-DOS, the average user never saw the MS-DOS prompt unless they actually wanted to. Windows NT was too intensive for most computers of the time, and it was not until after the release of Windows 95 that Win32 applications were widely used and supported.

Development

A UI mockup depicting an early form of Cairo/Chicago shell

The development of Windows 95 started in 1992 shortly after the release of Windows 3.1. Pre-release Windows for Workgroups 3.1 builds were forked into the Cougar project, which attempted to build a 32-bit protected mode kernel to be used in the next Windows-on-DOS release (at the time often called Windows 4.0 or Windows 93). The Cougar project was later merged with Jaguar (known as MS-DOS 7.0, also slated for a separate release) into Chicago, which became Windows 95. The Chicago project additionally took a few components from the Cairo project (meant for Windows NT), including the Cairo user interface, and integrated it into the Chicago shell. Internal Microsoft documents from 1992 occasionally refer to the Chicago project as Windows NT Lite.[1]

The first two builds known to exist are the Usability Testing Builds from January 1993, seen in a Microsoft video.[2] The first leaked build is 58s, known as PDK/M4 from August 1993, followed by 73f and 73g (PDK2/M5 from November 1993), 81 (January 1994), 90c (March 1994), and finally beta 1 builds 99, 116 and 122 (May 1994), beta 2 (October 1994) and RC (throughout 1995).

Builds

Pre-Chicago

Pre-Milestone 4

Milestone 4

Milestone 5

Beta 1/Milestone 6

Beta 2/Milestone 7

Beta 3/Milestone 8

Release Candidate 1

Far-East Betas

Middle-East Betas

Pre-RTM

Release to Manufacturing (RTM)

OEM Service Release 1 and Service Pack 1

OEM Service Release 2

Beta

Release Candidate

RTM

OEM Service Release 2.1

Beta

Release Candidate

RTM

OEM Service Release 2.5

References