Notes
- With Microsoft Windows 98 System Update and Microsoft Windows 98
Customer Service Pack, not all files have the version stamp that is
listed in the table. Windows 98 System Update was included in the
Windows 98 Customer Service Pack. For additional information, click
the article number below to view the article in the Microsoft
Knowledge Base:
Q239937
Availability of Microsoft Windows 98 Customer Service Pack
You can view file version information by right-clicking a file in
Windows Explorer, clicking Properties on the shortcut menu,
and then clicking the Version tab. If the properties for the
file do not show a Version tab, there is no version
information available for that file.
- With Windows 95 OEM Service Release 2 (OSR2), 2.1 (OSR 2.1) and
2.5 (OSR 2.5), not all files have the version stamp that is listed
in the table. For OSR 2.1 and OSR 2.5, only files that have been
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 right-clicking a file in
Windows Explorer, clicking Properties on the shortcut menu,
and then clicking the Version tab. If the properties for the
file do not show a Version tab, there is no version
information available for that file.
- With few exceptions, Windows 95 updates have a version number of
4.00.951 or later, indicating that the file is a newer version than
was originally included with Windows 95. Updates to Windows 95 OEM
Service Release 2 (OSR2) generally have a version of 4.00.1112 or
later.
- Multiple fixes may be applied to the same component. With a few
rare exceptions, these fixes are always cumulative. A change that is
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 OSR 2.1, you see version number
4.00.950B (the same as OSR2) when you follow the steps listed 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 OSR 2.5 and you uninstall the USB Supplement by
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 a
letter (A, B, or C) reflecting the original version of Windows 95.
Original Equipment Manufacturer (OEM) Version Identification
Windows may have been preinstalled on your computer. These installations
are referred to as OEM installations. An OEM Service Release (for
example, OSR 2) is an updated version of a product for PC manufacturers
(OEMs) to preinstall on new PCs. The purpose is to allow OEMs to install
an integrated Windows product that contains the latest available
individual updates and supports recent advances in hardware that
requires core operating system support.
NOTE: The OSR versions that are listed in this article can be
obtained only from an OEM. A retail Windows 95 (version 950)
installation cannot be upgraded with an OSR version.
To determine whether you have an OEM installation of Windows:
- Click Start, point to Settings, and then click Control
Panel.
- In Control Panel, double-click System.
- Click the General tab.
- 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. For example, the following sample Product
ID number indicates an OEM installation:
12345-OEM-6789098-76543
If you are using an OEM installation of Windows, you should contact your
computer's manufacturer for general Windows support.
International Version Identification
To determine the language version of Windows 95 or Windows 98 that you
are using:
- Click Start, point to Find, and then click Files
Or Folders.
- In the Named box, type winver.exe, and then click Find
Now.
- When the file is located, right-click the file, and then click Properties
on the menu that appears.
- Click the Version tab.
- In the Item Name box, click Language. The language
version is then displayed in the Value box.
Additional Information
For additional information about the specific contents of an OSR version
or service pack, click the article numbers below to view the articles in
the Microsoft Knowledge Base:
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
Q161020
Implementing Windows 95 Updates
Additional query words: servicepack1 imuwr 950a 950b 950 950c
Keywords : win95 win98 win98se kbWinME
Issue type : kbhowto
Technology : kbWinMEsearch kbWin95search kbWin98search kbWin98SEsearch
kbOPKSearch kbZNotKeyword3 kbWin98 kbWinME kbWin98SE kbWin95OPKOSR2
kbWin95OPKOSR25 kbWin95OPKOSR1 kbWin95OPKOSR210
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