C# .Net Service won't install on Win 7 64 bit

Question

.Net 3.5

I've built into the service exe the ability for it to install itself using a -i feature. I have a custom installer class and am using a common technique on found online here. That installer class basically has it's own service and serviced process installer.

This code has worked well for a very long time. Finally ran into a Win 7 64 bit machine were it refuses to install.

Basically, the log shows it's installing the service and that succeeds. Then it tries to create an event log and that fails with

An exception occurred during the Install phase. System.ComponentModel.Win32Exception: The specified service already exists

I just got done having the OS completely reinstalled from scratch, first thing I did was try to install as a service, and it's the same error. Why is it thinking that event log is already there?

I've already read all the other posts and I've browsed my registry and there is nothing in there for my service or event log. I have full admin rights, when I try to open cmd as administrator, it doesn't even prompt me, so as far as I can tell, I am an admin (I can see that in my user profile).

I even added code to check to see if it found the EventLog using System.Diagnostics.EventLog.SourceExists which does report it found it, and so I added a call to System.Diagnostics.EventLog.DeleteEventSource but that doesn't help.

I even tried removing the EventLog installer from the ServiceInstaller, but then it starts failing for other reasons.

Any ideas?

Here is some sample code for an alternate installer I tried that I found here with the same results:

public partial class Service1Installer : Installer
{
    public Service1Installer()
    {
        InitializeComponent();
        ServiceProcessInstaller process = new ServiceProcessInstaller();
        process.Account = ServiceAccount.LocalSystem;

        ServiceInstaller serviceAdmin = new ServiceInstaller();
        serviceAdmin.StartType = ServiceStartMode.Manual;
        serviceAdmin.ServiceName = "Service1";
        serviceAdmin.DisplayName = "Service1";
        serviceAdmin.Description = "Service1";

        Installers.Add(serviceAdmin);
        Installers.Add(process );
    }
}

Answer 1

In the end, my problem was our internal installer. I commented it out and now just install the service from the command line and it now installs on 64 bit OS. Still don't know why it would work before on 32 bit.

Answer 2

uninstall your service

  installutil /u yourproject.exe

restart your machine

http://msdn.microsoft.com/en-us/library/sd8zc8ha(v=vs.80).aspx

let me know if you still have a issue

Answer 3

Use installutil as @MicahArmantrout mentions, if the exe still resides on disk.

Otherwise, open a commandline as Administrator and execute: sc delete "my service name"