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permissions error when trying to write to the event log

I'm getting the following error message when trying to write to the event log in my aspx page:

code to write to the event log:
EventLog.WriteEntry ......

error message

[SecurityException: Requested registry access is not allowed.]
   System.ThrowHelper.ThrowSecurityException(ExceptionResource resource) +51
   Microsoft.Win32.RegistryKey.OpenSubKey(String name, Boolean writable) +7469849
   System.Diagnostics.EventLog.CreateEventSource(EventSourceCreationData sourceData) +366
   System.Diagnostics.EventLog.VerifyAndCreateSource(String sourceName, String currentMachineName) +194
   System.Diagnostics.EventLog.WriteEntry(String message, EventLogEntryType type, Int32 eventID, Int16 category, Byte[] rawData) +205
   System.Diagnostics.EventLog.WriteEntry(String source, String message, EventLogEntryType type, Int32 eventID, Int16 category, Byte[] rawData) +87
   System.Diagnostics.EventLog.WriteEntry(String source, String message, EventLogEntryType type) +14
   TagTeam.ttDownloadHandler.ProcessError(HttpContext context, String errorMessage, EventLogEntryType entryType) in e:\InetPub\Products\RevBase\Applications\DotNet\ttDownloadHandler\sl.ashx:395
   TagTeam.ttDownloadHandler.ProcessRequest(HttpContext context) in e:\InetPub\Products\RevBase\Applications\DotNet\ttDownloadHandler\sl.ashx:106
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

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I've inherited this aspx app from someone else, and am attempting to get it set up properly on my dev machine. I've checked a bunch of different permissions, including folder permissions as well as AppPool permissions (it runs under its own AppPool). I'm only writing to the event log when an error occurs, I would be perfectly happy trying to get the exact error message instead, but have had no luck.

.NET configurations are def NOT my strong point, so just a heads up on that :)

If you need any additional info, I'll be happy to provide it.

Cheers
Josh

ASKER CERTIFIED SOLUTION

Kimputer

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Big Monty

ASKER

how do I determine what the aspnet user is? Is that in reference to the IUSR account?

will I need to reboot the machine and/or restart IIS after I make these changes?

it_saige

To determine the user, you'll want to look at the identity property of the Application Pool -

If you find that the ApplicationPoolIdentity is used, you can use this TID to determine the user:

https://docs.microsoft.com/en-us/iis/manage/configuring-security/application-pool-identities

After you set the registry permissions as instructed by Kimputer you should not need to perform a restart. But you may need to restart the Windows Event Log Service if you find that your entries are not added.

-saige-

Big Monty

ASKER

I gave ApplicationPoolIdentity, which is what is listed as the account being used on my App Pool, full permissions and got the same error message.
Untitled.png

it_saige

Which log are you trying to write to?

-saige-

Big Monty

ASKER

application event log

SOLUTION

it_saige

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Big Monty

ASKER

i'm getting a different message now, and looking in the event log, i see it's being written to by my app, so I think this is all set. Going to do some more testing, will close this out in a bit.

Many thanks for the help!

Big Monty

ASKER

thanks for the assistance :)