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Why do I keep getting errors when upgrading Windows95 to Windows98?

Posted By : Debbi of Chandler-Gilbert Community College on March 6, 2002

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The below <comment> was from a previous response from you to someone else, and which is similar to my question now.

I have Win95 and have a win98 cd which came with my new computer. I have been unsuccessful at the setup. I keep getting an error message that reads:

**Your pc already has an operating system installed and can not be upgraded by this version of SETUP. Obtain WIN98 UPDATE (message SU0168)**

>>If you never had 98 you will of course have to purchase the complete installation cd-rom, NOT THE UPGRADE. The upgrade is only used to update and reconfigure older microsoft operating systems and is by itself insufficient to install the operating system<<

Since I have win95 and want to upgrade to win98, why am I getting this error message?

I have tried several different ways to install this software. MSDOS, CD ROM, FLOPPY, and NEW DIRECTORY (C:\) instead of C:\windows.

Thank you

This question was answered on March 6, 2002. Much of the information contained herein may have changed since posting.

This may sound a little confusing, so print this and read through it a few times before actually doing it.

First, you need to reboot your computer, in DOS mode (so that Win95 is not running) Click Start, Shutdown, Restart the computer in MS-DOS mode, and then click OK

When your computer boots back up to the DOS window, type the following commands, at the command prompt: (Hit ENTER after each command)

cd windows\system

ren setupx.dll setupx.ol1

ren setupx.w95 setupx.ol2

If the Setupx.w95 file is missing, EXTRACT a new copy of the Setupx.dll file from the current operating system's installation media (CD, Floppy, etc) to the Windows\System folder.

Exit DOS: type exit and press ENTER

In Windows, click Start, Run, in the window, type your cd-rom drive letter:\win98\setup.exe, (Example: E:\win98\setup.exe), click OK.

This should resolve the problem you are experiencing I got this information from the knowledge database (Article #Q225252) at If you would like to read the entire article, you can copy and paste this address into your Internet browser address window:;en-us;Q225252

About the author

Posted by Debbi of Chandler-Gilbert Community College on March 6, 2002

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