How to Determine the Version of Windows 95/98 in Use

• Microsoft Windows 95
• Microsoft Windows 95 OEM Service Release versions 1, 2, 2.1, 2.5
• Microsoft Windows 98
• Microsoft Windows 98 Second Edition

SUMMARY

This article describes how to identify the following information about your Windows 95/98 installation:

• Which version of Windows 95/98 you are running



• Whether your installation of Windows 95/98 is an OEM installation



• Whether your installation of Windows 95/98 is an international version

MORE INFORMATION

To determine the version of Windows 95/98 you are running, follow these steps:

1. In Control Panel, double-click System.



2. Click the General tab.



3. Locate the version number under the System heading and then see the following table:




   Release                   Version                    File dates
   ---------------------------------------------------------------------
   Windows 95 retail, OEM    4.00.950                      7/11/95
   Windows 95 retail SP1     4.00.950A                     7/11/95
   OEM Service Release 1     4.00.950A                     7/11/95
   OEM Service Release 2     4.00.1111* (4.00.950B)        8/24/96
   OEM Service Release 2.1   4.03.1212-1214* (4.00.950B)   8/24/96-8/27/97    
   OEM Service Release 2.5   4.03.1214* (4.00.950C)        8/24/96-11/18/97
   Windows 98 retail, OEM    4.10.1998                     5/11/98
   Windows 98 Second Edition 4.10.2222A                    4/23/99 

NOTES

• In the case of Microsoft Windows 98 System Update and Microsoft Windows 98 Customer Service Pack, not all files have this version stamp. NOTE: Windows 98 System Update was included in the Windows 98 Customer Service Pack. For more information, please see the following article in the Microsoft Knowledge Base:
  

  Q239937 Availability of Microsoft Windows 98 Customer Service Pack

  You can view file version information by using the right mouse button to click a file in Windows Explorer, clicking Properties on the menu that appears, and then clicking the Version tab. If the property sheet for the file does not show a Version tab, there is no version information available for that file.



• In the case of Windows 95 OEM Service Release 2 (OSR2), 2.1 (OSR 2.1) and 2.5 (OSR 2.5), not all files have this version stamp. In the case of OSR 2.1 and OSR 2.5, only files updated to provide support for the Win32 Driver Model (WDM) and Universal Serial Bus (USB) may have this version stamp (the remainder maintain the same version stamps as the corresponding OSR2 files). You can view file version information by using the right mouse button to click a file in Windows Explorer, clicking Properties on the menu that appears, and then clicking the Version tab. If the property sheet for the file does not show a Version tab, there is no version information available for that file.



• With few exceptions, Windows 95 updates are stamped with a version number of 4.00.951 or greater, indicating that the file is a newer version than originally included with Windows 95. Updates to Windows 95 OEM Service Release 2 (OSR2) generally have a version of 4.00.1112 or greater.



• It is possible that multiple fixes would be applied to the same component. With a few rare exceptions, these fixes are always cumulative. A change implemented in a given version of a particular component is also included in later versions of that component, along with any additional change implemented in the later versions. (For example, version 4.00.952 would contain the change implemented in version 4.00.951, as well as the new change.)



• The cumulative nature of these changes, combined with the incremented version numbers, means that, with very few exceptions, there is always one "current" version of a given component, containing all fixes made to that component to date.



• If you are running Windows 95 OEM Service Release version 2.1, you see the version number 4.00.950B (the same as OSR2) when you follow the steps above. To determine whether you are running OSR 2.1, check for "USB Supplement to OSR2" in the list of installed programs in the Add/Remove Programs tool in Control Panel, and check for version 4.03.1212 of the Ntkern.vxd file in the Windows\System\Vmm32 folder.



• If you are running OSR2.5 and you uninstall the USB Supplement using the Add/Remove Programs tool in Control Panel, the version number changes to 4.00.950b on the General tab in System properties.



• If you have installed a program that uses Microsoft Active Accessibility (MSAA), the updated User.exe file version number may change to 4.01.0970 or 4.01.970 followed by either a blank or the letter (" ",a,B,C) reflecting the original version of Windows 95.

Original Equipment Manufacturer (OEM) Version Identification

1. In Control Panel, double-click System.



2. Click the General tab.



3. Locate the Product ID number under the Registered To heading. This number typically contains 20 digits. If digits 6, 7, and 8 contain the letters "OEM," you have an OEM installation of Windows 95/98. For example, the following sample Product ID number indicates an OEM installation:

   12345-OEM-6789098-76543

International Version Identification

1. Click Start, point to Find, and then click Files Or Folders.



2. In the Named box, type winver.exe, and then click Find Now.



3. When the file is located, use the right mouse button to click the file, and then click Properties on the menu that appears.



4. Click the Version tab.



5. In the Item Name box, click Language. The language version is then displayed in the Value box.

Additional Information

Q146449 Description of Microsoft Windows 95 Service Pack 1 Components

Q143003 Description of Microsoft Windows 95 Service Pack 1 Updates

Q148761 Description of Windows 95 OEM Service Release 1

Q155003 Description of Windows 95 OEM Service Release 2

Q181661 Files Included with the USB Supplement in OSR2.1 and OSR2.5

Q178972 Description of Windows 95 OEM Service Release 2.5

Q234762 Description of Windows 98 Second Edition

Q239937 Availability of Microsoft Windows 98 Customer Service Pack

Q232972 Contents of the Microsoft Windows 98 System Update

Year 2000 Compliance

http://www.microsoft.com/technet/year2k

Additional query words: servicepack1 imuwr 950a 950b 950 950c

Keywords : kb2000 osr1 osr2 win95 win98
Version : WINDOWS:95
Platform : WINDOWS
Issue type : kbhowto