Skip to Main Content
  • Questions
  • Unable to install 18c Expression Edition


Question and Answer

Connor McDonald

Thanks for the question, Bhogesh.

Asked: March 04, 2019 - 9:20 pm UTC

Last updated: November 22, 2021 - 1:49 am UTC

Version: 18c Expression Edition

Viewed 10K+ times! This question is

You Asked

We are unable to install 18c Expression Edition in Windows 10 it is extracting and in middle, it is start rollback. Finally below the below message.

Below is the message.

The wizard was interrupted before Oracle Database 18c Express Edition could be completely installed.

your system has not been modified. To complete installation at another time, please run setup again.

Click Finish to exit the wizard.

and Connor said...

Depending on how far the installation got, there may be a folder called "cfgtoollogs" under the *target* installation area. If its present, take a look in there for logging information.

But typically an error of "The wizard was interrupted.." meant we could not even get the binaries installed. So check the obvious things - disk space sufficient, restart the machine, admin rights etc. Logs of that are typically found at: %Program Files%\Oracle\Inventory\logs

If all else fails, try posting this on the XE forum


  (8 ratings)

Is this answer out of date? If it is, please let us know via a Comment


Dont Unzip!

A reader, June 15, 2019 - 7:41 pm UTC

I faced a similar issue and upon seeing your answer it hit me that this probably should be something basic.
SO i tried running the setup.exe directly from within the zip (without un-ziping) and yay.. i have it installed in my system now.. had been trying to install it from past 2 weeks :P

Install not even start without unzipping

MGM, November 30, 2019 - 11:49 pm UTC

[Reply to a previous "review"]
I got this error when started setup without unzipping:
"Error reading setup initialization file"

My problem was: Not english letter ("รก") in my Windows user name!

A reader, December 01, 2019 - 12:57 am UTC

Welcome to XXI.century.

Dont Unzip!

A reader, November 12, 2020 - 1:23 am UTC

Surprisingly that works , don't unzip - Just run from the zip file !!

Installing Oracle 18c

Jim, February 26, 2021 - 8:27 am UTC

I tried openening the file like you said, without unzipping. But it automatically extracts when I click "setup.exe" file. Is this normal?
Connor McDonald
March 02, 2021 - 1:44 am UTC

Here's my recording of my installation process.

It is sped up a little, but you should be able to follow the same steps.

Installing Oracle DB 18c on Win10

Joe Sweeney, April 19, 2021 - 8:50 pm UTC

I was getting the same error. When I read the original response, my immediate suspicion was permissions issues.

Here's what I did to successfully install:

1. Extract the zip file

2. Right-click on setup.exe

3. Select "Run as administrator"

4. Continue as usual

Connor McDonald
April 21, 2021 - 3:16 am UTC

Yup! Thats my experience too.

run setup.exe and allow access to java

cg, August 16, 2021 - 2:16 am UTC

When you download with java, java install needs to admin. so, run as admin or run the setup.exe normally, it will prompt to allow access , click allow it will go thru.

Installation error

Mohamed Asif, November 20, 2021 - 8:32 pm UTC

Getting an error while installing oracle 21c edition and getting error as There is already existing oracle database machine express edition server in this machine .
Connor McDonald
November 22, 2021 - 1:49 am UTC

That is pretty self-explanatory no?

Make sure you uninstall any previous versions you have.

More to Explore


Need more information on Administration? Check out the Administrators guide for the Oracle Database