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Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel Posted on

http://blogs.msdn.com/b/astebner/archive/2005/09/13/465401.aspx

http://www.experimentalspace.com/index.php/2008/04/error-when-trying-to-install-full-visual-studio-you-must-uninstall-all-the-pre-release-products-in-a-specific-order-before-you-can-continue-with-setup/

I tried to install a new version of windows services that packed into 1 setup.msi and encounter the above mentioned error. To resolve it I tried google read lots of but then find the following article

MSIEXEC – The power user’s install

steps to solve the error:

1. Execute the following command from command prompt:

msiexec /i program_name.msi /lv logfile.log

where program_name.msi is the new version

/lv is log Verbose output

 

2. open up the logfile.log in the editor

3. find the GUID in it

I found it like the following

Product Code from property table before transforms: ‘{GUID}’

4. Above mentioned article suggest  to search it in the registry but to find the uninstall command. Try if you like to see it in the registry.

you need to search twice to to get there there you

I tried the following command as it mentioned in the above mentioned article but it didn’t work for me. so I keep digging until I got

Windows 7 and Windows Installer Error “Another installation is in progress”

It mentioned the use of msizap.exe

5.   by combining the commands from both the articles I able to uninstall the service successfully

execute the following command from the visual studio command prompt if you already have installed or get it from Microsoft website

http://msdn.microsoft.com/en-us/library/aa370523%28VS.85%29.aspx

 

msizap.exe TWP {GUID}

it did the trick and removed the installed service successfully

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