edI have C# ASP.NET 4.5 Webform application and use the following code:
if (!EventLog.SourceExists(sSource)) EventLog.CreateEventSource(sSource, sLog);
EventLog.WriteEntry(sSource, message, level);
Since the first line was failing I created
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\eventlog\Application\IDDISLOG in registry
I get the following exception on WriteEntry Method:
Cannot open log for source 'IDDISLOG'. You may not have write access.
Searched other similar questions but none worked for me.
Here is what I have done so far:
Added "Network service" to the project file folder
Added Network service to and gave it full access.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\eventlog
Added Nertwork service to and gave it full access.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\eventlog\Security
Checked and saw w3wp.exe *32 process runs with User Name ASP.Net v4.0.
So added ASP.Net v4.0 to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\eventlog
Still, error remains
Your user account may not have sufficient privileges to create an event source, which only administrator accounts can do. If you can log in as an administrator, either run your code again or add a folder here: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\eventlog\Application\IDDISLOG
That should allow your application to write to the event log with that source. You may need to configure the actual registry entry further to suit your needs.
In IIS (Windows server), you should change de identity used by de app pool, so the new identity has permission to write to the event log.
Select the app pool and advanced settings. then edit and insert a custom account, althoug local system will suffice. If you use a custom account be sure not to use a user whose password is going to expire, because when it happens logging to event log will fail.
I am having an issue launching a process from the system account. I just want to make it clear that I am not trying to run it under an interactive session, nor trying to impersonate any account. All I am trying to do is launch a process from the system account into the same session. The session in which the NTAUTHORITY\SYSTEM resides is 0 I believe.
I created a simple Windows Service that basically just uses Process.start to launch the executable. The Service is a system service.
I installed the service using SC as such:
sc create "MYSERVICE" binpath= "C:\Projects\MyService\MyService.exe" displayname= "My Awesome Service"
When I try to manually start the service I get a prompt that says "The ServiceName service on local computers started and then stopped. Some services stop Automatically if they are not in use by other services or programs."
Along with this the executable is never actually started. When monitoring it in processhacker I can see that the service does start, but the executable it attempts doesn't. Can anyone help me figure out why?
As I stated earlier my service is very basic, all it does is try and launch the executable when started:
protected override void OnStart(string[] args)
{
Process.Start("svrexec.exe");
}
protected override void OnStop()
{
}
Did you specify full path to your executable? The working folder for the system user is %windir%\System32.
Try Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "svrexec.exe"), or set Environment.CurrentDirectory = AppDomain.CurrentDomain.BaseDirectory
Are you 100% sure it's not running?
I tried and mine is running under the SYSTEM User Name
check Show processes from all users in Task Manager
Well, I have created a new windows service and the install from Visual Studio.
When I am done installing, how can I start the service ?
I need something that will allow me to start the process, or an exe.. something?
The Installer is : Visual Studio Installer - Setup Project.
Any help?
My question in order:
Why the service don't start?
How can i control what happen after intall ? Where is the code for it?
Thanks!
even you Set the startup type to Automatic it will not start your service automatically until the machine restart. what you can do is create event handler for AfterInstall event of your service installer class and start the service using ServiceController Start method as below
public serviceInstaller()
{
this.AfterInstall += new InstallEventHandler(serviceInstaller_AfterInstall);
}
void serviceInstaller_AfterInstall(object sender, InstallEventArgs e)
{
ServiceController sc = new ServiceController(serviceInstaller.ServiceName);
sc.Start();
}
you can create event using the visual studio event window as well.
to start your service you can either execute the command:
net start YourServiceName
or go to Control Panel -> Admin tools -> Services and select your service and click start.
full path above depends also on your actual windows version.
even if you did not use any logging, in general service failures are recorded in the Windows Event Log so open Event Viewer and see latest events.
Set the startup type to Automatic in the ServiceInstaller class properties (you can do it in the Designer file).
A windows service needs to be installed ( it should tell you what to do if you try debugging it ), then started in the server manager. Then you can attach to it.
They are a bit of a pain to debug, TBH.
What does the service do? is it opening SQL connections?
looking for a file?
check in your event viewer where the service is installed for errors after you try to start it, it will give us a better understanding.
It is impossible to understand your question unless you take interest in making it understandable.
However from my assumption,
Goto Visual studio Tools => Visual Studio command prompt
use command net start <>
If fails starting the servicce, Check event log (eventvwr.msc in run dialog) to see if there any relevant errors logged.
Your Windows service working in some systems.
If you face some system getting error Windows Service not starting after installing if manually/automatically.
if the service starts and stops like that, it means your code is throwing an unhandled exception. This is pretty difficult to debug, but there are a few options.
Consult the Windows Event Viewer.
Event Viewer - eventvwr.msc
Normally you can get to this by going to the computer/server manager, then clicking Event Viewer -> Windows Logs -> Application. You can see what threw the exception here, which may help, but you don't get the stack trace.
Event Viewer Log Image
Add try/catch block in your service start method.
Let you check whether you are using any hot code(For Ex: "D:\"). That drive is not available in installed system.
This will helps a lot!
I read the MSDN article on the topic. To quote:
Because a service must be run from
within the context of the Services
Control Manager rather than from
within Visual Studio, debugging a
service is not as straightforward as
debugging other Visual Studio
application types. To debug a service,
you must start the service and then
attach a debugger to the process in
which it is running. You can then
debug your application using all of
the standard debugging functionality
of Visual Studio.
Now my problem is that my service fails to start in the first place. First it crashes, and says:
An unhandled exception
(System.Runtime.InteropServices.COMException)
occurred in MyServiceName.exe[3596])
and suggests me to debug it (the debugger instance instantly crashes when I choose one). Then it says
Could not start the MyServiceName
service on Local Computer. Error
1053: The service did not respond to
the start or control request in a
timely fashion
So, how can I investigate/debug the reason that my service won't start? The thing is I created a console application that does EXACTLY what the service does and it works fine. (I mean I just copied the OnStart() method's and the main loop's contents to main).
Any help would be appreciated.
The Service is written in C# with heavy use of interop. I am using VS2008
You could use a parameter to let your application decide whether to start as service or regular app (i.e. in this case show a Form or start the service):
static void Main(string[] args)
{
if ((1 == args.Length) && ("-runAsApp" == args[0]))
{
Application.Run(new application_form());
}
else
{
System.ServiceProcess.ServiceBase[] ServicesToRun;
ServicesToRun = new ServiceBase[] { new MyService() };
System.ServiceProcess.ServiceBase.Run(ServicesToRun);
}
}
Now if you pass the parameter "-runAsApp" you can debug the application normally - the SCM won't pass this parameter, so you can also use it as service w/o any code change (provided you derive from ServiceBase)
Edit:
The other difference with windows services is identity (this might be especially important with InterOp) - you want to make sure you are testing under the same identity in "app" mode as well as service mode.
To do so you can use impersonation (I can post a C# wrapper if it helps, but this can be easily googled) in app mode to use the same identity your windows service will be running under i.e. usually LocalService or NetworkService.
If another identity is required you can add settings to the app.config that allow you to decide whether to use credentials, and if so which user to impersonate - these settings would be active when running as app, but turned off for the windows service (since the service is already running under the desired identity):
<appSettings>
<add key="useCredentials" value="false"/>
<add key="user" value="Foo"/>
<add key="password" value="Bar"/>
</appSettings>
I usually just manually set a breakpoint, then point it to the currently open project in c#. The code to set a breakpoint is:
System.Diagnostics.Debugger.Break();
That should get you started, then you can just step through your code and see what's really happening.
I stole this from C. Lawrence Wenham, so I can't really take credit, but you can programmatically attach a debugger to a service, WITHOUT breaking execution at that point, with the following code:
System.Diagnostics.Debugger.Launch();
Put this in your service's OnStart() method, as the first line, and it will prompt you to choose an instance of VS to attach its debugger. From there, the system will stop at breakpoints you set, and on exceptions thrown out. I would put an #if DEBUG clause around the code so a Release build won't include it; or you can just strip it out after you find the problem.
You can use WinDbg/NTSD (another debugger from the "Debugging tools for windows" package) to start a debugger together with your service.
To do this open "gflags" (also available in the above mentioned package) to the "Image file" tab and set the path to debugger executable for your image file (service);
If your service is marked as interactive (only possible if it runs under the SYSTEM account) you can directly start WinDbg, just set the debugger to something like "PATH_TO_WINDBG\windbg.exe -g -G" (the -g / -G are needed so that the debugger doesn't break execution on application start or end - the default behaviour). Now when starting your service the windbg window should pop-up and will catch any unhandled exception.
If your service is not interactive you can start the NTSD debugger (a command line debugger) in remote mode and connect to it from WinDbg (that can even be running in another PC). To do this set the debugger in gflags to something like "PATH_TO_NTSD\ntsd -remote tcp:port=6666,server=localhost". Then connect to the remote debugger by starting windbg with something like "windbg -remote tcp:port=6666,server=localhost" and you should have complete control over the other debugging session.
As for finding the source of the exception itself a windbg tutorial is over the topic here but as a start try to execute the "!analyze -v" command after the exception was caught - with some luck this is all information you'll need..
Note: maybe this is overkill for your case but with this approach you can even debug services during system start-up (I had once a timing problem with a service had an issue only when starting the first time with the system)
One thing I do (which may be kind of a hack) is put a Thread.Sleep(10000) right at the beginning of my OnStart() method. This gives me a 10-second window to attach my debugger to the service before it does anything else.
Of course I remove the Thread.Sleep() statement when I'm done debugging.
One other thing you may do is the following:
public override void OnStart()
{
try
{
// all your OnStart() logic here
}
catch(Exception ex)
{
// Log ex.Message
if (!EventLog.SourceExists("MyApplication"))
EventLog.CreateEventSource("MyApplication", "Application");
EventLog.WriteEntry("MyApplication", "Failed to start: " + ex.Message);
throw;
}
}
When you log ex.Message, you may get a more detailed error message. Furthermore, you could just log ex.ToString() to get the whole stack trace, and if your .pdb files are in the same directory as your executable, it will even tell you what line the Exception occurred on.
Add lots of verbose logging in your OnStart. It's painful and old school, but it works.
Seems like the problem is with the user context. Let me confirm whether my assumptions are right.
When you say that the code works perfectly from console application, I assume you are executing the Console application under the same user which you had logged in.
When you say that the same code crashes while called from the windows service, I assume the service is running in "Local System" account in your development machine.
If both my assumptions are right, please try out the following steps.
In the services listing right-click your service, select properties and then "Log On" tab.
Select the option "This account" and provide the existing username and password.
Now try starting the service. It should now start without any errors.
Following could be the root cause of your error
If you are using SQL Server make sure you are not using SSPI authentication.
If you are trying to read any shared folder\resource which you don't have permission when using "local system" account.
If any of the required dependencies required by the application is in a different folder which the "Local System" user doesn't have permission to access.
If you are using VBA automation which wont work in "Local System" account.
Try disabling your firewall or antivirus.
You could add some logging around the interop calls to find out which one fails.
Also services by default aren't associated with a desktop; if you open the services.msc control panel applet, get the properties of your service, go to the "Log On" tab, you could check "Allow service to interact with desktop". This could fix the problem for you in some cases.
I would assume the reason could be causing because of heavy use of interops. So you need to tackle this problem differently. I would suggest create a windows or console app with same logic of you service and make sure that it works first without any issues, and then you may want to go with creation of the Win service.
Debugging services is a pain, particularly since startup seems to be when many of the problems manifest (at least for us).
What we typically do is extract as much of the logic as possible to a single class that has start and stop methods. Those class methods are all that the service calls directly. We then create a WinForm application that has two buttons: one to invoke start, another to invoke stop. We can then run this WinForm applicaiton directly from the debugger and see what is happening.
Not the most elegant solution, but it works for us.
Check out this question, which discusses how to catch unhandled exceptions in a window service.
In order to attach a debugger to the Windows Service, it needs to be started first. The reason why the service failed to start can be checked in Windows Event Log.
After that the process of attaching a debugger is pretty straight forward from Visual Studio Debug->Attach To Process.
What I've done is implemented by OnStart() to look something like this:
_myBusinessObject = new MyBusinessObject();
After the Business Object has been constructed, timers and IPC handlers do all the real (Service) work.
Doing it like this allows you to create a Forms/WPF application that call the same code above in the Form_Loaded handler. This way, debugging the Forms application is the exact same as debugging the Service.
The only issue is that if you are using app.config values, there will be a second app.config file that needs to be kept up-to-date.
Use following Code in Service OnStart Method:
System.Diagnostics.Debugger.Launch();
Choose Visual Studio option from Pop Up message
read the 2 articles mentioned here:
http://geekswithblogs.net/BlackRabbitCoder/archive/2011/03/01/c-toolbox-debug-able-self-installable-windows-service-template-redux.aspx
Step 1 - Add #if region to your Program.cs
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main()
{
ServiceBase[] ServicesToRun;
ServicesToRun = new ServiceBase[]
{
new StockInfoService()
};
ServiceBase.Run(ServicesToRun);
#if (!DEBUG)
ServiceBase[] ServicesToRun = new ServiceBase[] { new SqlBackupService() };
ServiceBase.Run(ServicesToRun);
#else
StockInfoService service = new StockInfoService();
service.OnStart();
System.Threading.Thread.Sleep(System.Threading.Timeout.Infinite);
#endif
}
Step 2 - In Service.cs change your OnStart(string[] args) method without parameter one. (I commended mine.)
public void OnStart()
//protected override void OnStart(string[] args)
{
**Do your thing.
}
Step 3 - Simply hit Start (F5) and debug your code.
I am trying to start an external process from a .NET Windows service. In the past I have used the Process.Start() overload that takes the executable path and a command line string. This works. But now I would like to start the process and have it run in the context of a particular user. So I call this version of Start()
public static Process Start(
string fileName,
string userName,
SecureString password,
string domain)
However, when I call the method, the application I am trying to run generates an unhandled exception:
The application failed to initialize properly (0xc0000142). Click on OK to terminate the application.
I have tried to start different applications and they all generate the same exception. I have run the code outside of the Windows service and the application starts correctly.
So is there a way to get this to work in a Windows service?
Maybe the user has to have, "logon as a service" security right. This is done with the "local security policy" application. And/or "logon as a batch job".
This is very similar to this question here. The answer is usually due to security issues with the desktop and window station in which the process is being run. See this article for an explanation and some sample code.
This is just a shot in the dark, but perhaps you can try to run the Windows Service in Interactive mode. If that works, though, this can't be done in Windows Vista (because of Session 0 Isolation).
Use Filemon and see if it is trying to open a config file and not finding it. I once had this error due to a malformed config.