Installing windows service fails: service already exists

I'm trying to reinstall a service I've written using C#. The first time this worked. I used installutil to handle the install and the service showed up in the list of services and I could start it. Then I made some updates to the code and uninstalled the service. After figuring out I had to close the services window, the service seemed to have disappeared (i.e. successfully uninstalled). However, upon trying to install the service again I got the message saying:

System.ComponentModel.Win32Exception: The specified service already exists

This seemed strange as I couldn't see it in the services window. I finally thought I found the problem after deleting a registry key regarding my service, but unfortunately this didn't solve anything.

Also, uninstalling again doesn't do much to solve the problem as this results in the contradictory message:

System.ComponentMode开发者_JS百科l.Win32Exception: The specified service does not exist as an installed service

What should I believe? Does or doesn't the service exists? I feel like a physicist trying to figure out whether the cat is dead or alive. I hope someone here knows something to help solve this problem.

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A related SO-answer finally pointed me in the right direction (why I didn't find that in Google or SO's own search I don't know). Anyway, apparently the Designer.cs generated by Visual Studio also creates a process- and service-installer. Which of course install services with the same name as my manually created installers. Removing my own installers solved the problem.

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Actual issue is that you have added the object of serviceProcessInstaller & serviceInstaller multiple times in your code .. It should only be added once..

Open the designer.cs file of projectinstaller you will see it is already added there...

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I was also getting the same error, so to resolve, what I did was:

• Open the ProjectInstaller.cs from solution Explorer
• Go into view designer mode by right clicking, if code view is there

You will see a new installer apart from defaults 2, i.e. serviceprocessInstaller1 and ServiceInstaller1.

Just remove that installer which was automatically generated. Now build and install, it will work.

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Check the Service Name Property in Service Installer.

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I have tried all solution mentioned above. But my service was installed with some different name in registry. So just try to delete that registry.

Open below link in registry

Hkey_Local_Macine>System>CurrentControlSet>Service>

But I didnt find my service under this path. So I tried to find it out in registry. Just press ctrl + F and give the name of your service. or some guess name. You will get the exact location.

Just delete it. It will work.

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Need to remove "Me.Installers.AddRange(New System.Configuration.Install.Installer() {Me.ServiceInstaller1, Me.ServiceProcessInstaller1})" line if same line is there already in designer, then it will get installed.

ServiceProcessInstaller1 is name in my project.