Asp.net Write Error To Event Log
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Vb.net Write Error To Event Log
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C# Write To Application Event Log
log in ASP.NET on Windows Server 2008 IIS7 up vote 22 down vote favorite 7 I'm trying to use log4net to write to a customer event log under IIS7 on Windows Server 2008 SP1. However, account doesn't seem to have access to write to the event log. Does anyone have any suggestions? asp.net iis iis-7 share|improve this question edited Apr 21 '09 at 21:12 hlovdal c# eventlog 15.2k65399 asked Apr 3 '09 at 0:59 mhenderson 113114 add a comment| 4 Answers 4 active oldest votes up vote 52 down vote accepted The problem is probably your event source. You have to create an event source before you can write to the event log (if you don't, the Event log object tries to create one for you "automagically" the first time you write to the log). You have to have hightened permissions to create an event log source. In some of my web apps, I have put the code to create the event source into my setup (setup runs as admin, so I'm always guaranteed to be able to create the source). You just have to create the source once. After that, your ASP.Net app should have sufficient permissions to write entries specifying the source (or sources) that you created. You can use an EventLogInstaller in your setup to create the source, or you could just write a little utility to call EventLog.CreateEventSource() as an admin. I'll show you both ways: // You would do this one from within an Installer class in a setup: private void InstallEventLog() { EventLogInstaller logInstaller; //C
running on your Windows Server 2003 and you're merrily logging events to the Application Event Log (or any event
C# Write To Event Log Without Admin
log for that matter). Then you upgrade to Windows Server 2003
Eventlog.writeentry Not Working
SP1 and see something like this: Security Exception Description: The application attempted to perform an operation not eventlog class allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. Exception http://stackoverflow.com/questions/712203/writing-to-an-event-log-in-asp-net-on-windows-server-2008-iis7 Details: System.Security.SecurityException: Requested registry access is not allowed. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [SecurityException: Requested registry access is not allowed.] Microsoft.Win32.RegistryKey.OpenSubKey(String name, Boolean writable) +473 System.Diagnostics.EventLog.CreateEventSource(String source, http://jameskovacs.com/2005/07/20/writing-to-the-event-log-from-aspnet-fails-when-running-on-windows-server-2003-sp1/ String logName, String machineName, Boolean useMutex) +443 System.Diagnostics.EventLog.WriteEntry(String message, EventLogEntryType type, Int32 eventID, Int16 category, Byte[] rawData) +348 System.Diagnostics.EventLog.WriteEntry(String message, EventLogEntryType type, Int32 eventID, Int16 category) +21 AspNetTest.WebForm1.Page_Load(Object sender, EventArgs e) in c:\dev\aspnettest\webform1.aspx.cs:23 System.Web.UI.Control.OnLoad(EventArgs e) +67 System.Web.UI.Control.LoadRecursive() +35 System.Web.UI.Page.ProcessRequestMain() +2112 System.Web.UI.Page.ProcessRequest() +218 System.Web.UI.Page.ProcessRequest(HttpContext context) +18 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication+IExecutionStep.Execute() +179 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +87 What happened? The problem is caused by Microsoft tightening up security around the event logs in Windows Server 2003 SP1. (See the section entitled "Tighter ACLs on Event Logs".)Tightening security is a good idea, but logging events to the event log from an ASP.NET application is a rather common thing to do. So how do we re-enable the ability of ASP.NET to write to the event log? I have seen information on the web, the sources of which shall remain nameless to protect the seriously misled, that basically tells you to modify your ASP.NET process identity in machine.config from machine to system so that your application can write to the event log. What a coll
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