Trouble with IIS settings : Server Application Unavailable (ASP.NET 2.0)

[myth0s]

Hello everybody :)

I have trouble getting my ASP application to work. I googled a lot for a solution... many solutions I tried came from The Scripts, but none of them worked. Nonetheless, I think somebody out there can help me ;)

So, I have an ASP.NET 2.0 application on the test server. That application doesn't work, I get "Server Application Unavailable" all the time but... while experimenting with all the possibles solutions I found over the Internet, I found that if I set the Identity of my application pool to Local System via IIS, everything work fine.

This is a good start, as I know that most of the setup I have done is OK. But I do know that I shouldn't set the Identity of any application pool to Local System unless it's really necessary. I need help to identify what permission I forgot to give to this user or that account.

I have already created a ASPUSER account on the WS 2003. This account has Write permisson on the Microsoft.NET folder, as suggested in some possibles solutions I have read. I have also followed the How To: Create a Service Account for an ASP.NET 2.0 Application" on microsoft.com which means I have runned the following command : [code]aspnet_regiis -ga MyServer\ASPUSER[code]. I set my application to use a separate application pool. If I set the identity of that application to Local System, it works, but if I set it to ASPUSER, it doesn't.

Here's what I get in my browser :

Server Application Unavailable
The web application you are attempting to access on this web server is currently unavailable. Please hit the "Refresh" button in your web browser to retry your request.

Administrator Note: An error message detailing the cause of this specific request failure can be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur.


Here's what I can see in the event log :

Source: ASP.NET 2.0.50727.0
Category : ASP.NET 2.0.50727.0
Type : Error
Event : 1334
User : N/A

Failed to initialize the AppDomain:/LM/W3SVC/1411204779/Root/tests_alex/VS_1

Exception: System.IO.FileLoadException

Message: Could not load file or assembly 'System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. Access is denied.

StackTrace: at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
at System.Reflection.Assembly.InternalLoad(AssemblyNa me assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
at System.Activator.CreateInstance(String assemblyName, String typeName, Boolean ignoreCase, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, Evidence securityInfo, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(String assemblyName, String typeName)
at System.AppDomain.CreateInstance(String assemblyName, String typeName)
at System.AppDomain.CreateInstance(String assemblyName, String typeName)
at System.Web.Hosting.ApplicationManager.CreateAppDom ainWithHostingEnvironment(String appId, IApplicationHost appHost, HostingEnvironmentParameters hostingParameters)
at System.Web.Hosting.ApplicationManager.CreateAppDom ainWithHostingEnvironmentAndReportErrors(String appId, IApplicationHost appHost, HostingEnvironmentParameters hostingParameters)

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Thank you a lot for your assistance!! :)
Alexandre

[kenobewan]

This is usually a permission problem stemming from the aspnet account user being given appropriate access to the folder. HTH.

[myth0s]

This is usually a permission problem stemming from the aspnet account user being given appropriate access to the folder. HTH.

Yes it was. I didn't thought that Network Service was a "real" account on the local machine. Once that I found out it was, I gave that account read access to htdocs and now everything's fine.

Thank you :)

[san1709]

This is usually a permission problem stemming from the aspnet account user being given appropriate access to the folder. HTH.

Could u let me know how to provide such permission to avoid this kind of error? plz specify the steps for same.This problem comes for me when i access remotely and click link having download file fize >10MB .So how could we download > 20 MB size file remotely.But one times miracle happen and error went away some hour even i didn't changes any codes yet.so plz do favor me .
Thanking u in advance.
santosh

[kenobewan]

I don't do favors or I might be accused of favortism ;). I don't believe that you are having the same type of problem, a permission in the aspnet account is not influenced by file size per se.

[jehrich]

Hi myth0s,

Try running Process Monitor from Sysinternals on the web server while you are experiencing the error. You should be able to figure out the permissions issue by examining any "access denied" errors in the output.

Good luck!

JE