ASP.NET error log

Question

Every time the ASP.NET application in question throws an error the Global.asax writes to an error file: logs\error.log. The ASP.NET applications works using Windows authentication.

I am able to write to the log file when debugging using Visual Studio, however it does not work when the application is deployed in the live environment. How do I find out what user account I need to give access to: logs/error.log?

The application is deployed on a Windows 2003 Server with IIS6. Microsoft.NET 3.5.

What OS are you deploying to? – Trisped May 07 '12 at 19:15 — Trisped, May 07 '12 at 19:15
http://stackoverflow.com/a/5046234/532498 – Pleun May 07 '12 at 19:20 — Pleun, May 07 '12 at 19:20

score 1 · Answer 1 · answered May 07 '12 at 19:17

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You would have to give the required permissions to the network service account. This link might be able to help you out.

answered May 07 '12 at 19:17

Krishna

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score 0 · Accepted Answer · answered May 07 '12 at 19:21

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Windows Server 2003 defaults to the "Network Service" account. This can be verified by opening IIS (expand the computer if needed), expand the "Application Pools" folder, right click on the pool used by your web app, and go to the Identity tab.

FYI: Windows Server 2008 uses the IIS_IUSER instead of Network Services.

answered May 07 '12 at 19:21

Trisped

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Thanks. I have selected this as the answer as you also talked about how to find the identity user in IIS. – w0051977 May 07 '12 at 19:58

score 0 · Answer 3 · answered May 07 '12 at 19:28

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I hope that logs folder is a virtual directory setup outside the web site directory.

Otherwise every time you deploy the entire solution you will overwrite the logs folder and its content.

answered May 07 '12 at 19:28

Internet Engineer

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No. The XCOPY batch file creates a copy of the error log before overwriting. – w0051977 May 07 '12 at 19:59

score 0 · Answer 4 · answered May 07 '12 at 19:36

Microsoft has a tool for monitoring file access that can be useful for troubleshooting permission issues.

Process Monitor - http://technet.microsoft.com/en-us/sysinternals/bb896645

You will also want to check if your application is using windows authentication & identity impersonation since that can change the identity the application is executing with when enabled.

ASP.NET error log

4 Answers4