Microsoft KB Archive/887286

= Event ID 1084 and event ID 1009 errors occur when you open an ASP.NET Web page in an Application Center 2000 cluster =

Article ID: 887286

Article Last Modified on 12/27/2006

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APPLIES TO


 * Microsoft .NET Framework 1.1
 * Microsoft .NET Framework 1.0

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SYMPTOMS
When you open an ASP.NET Web page in a Microsoft Application Center 2000 cluster, you receive the following error message:

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

The following event is logged in the application event log:

Event Type: Error

Event Source: ASP.NET 1.1.4322.0

Event Category: None

Event ID: 1084

Description:

aspnet_wp.exe could not be started. The error code for the failure is 80004005. This error can be caused when the worker process account has insufficient rights to read the .NET Framework files. Please ensure that the .NET Framework is correctly installed and that the ACLs on the installation directory allow access to the configured account.

Additionally, the following event may also be logged in the application event log:

Event Type: Error

Event Source: ASP.NET 1.1.4322.0

Event Category: None

Event ID: 1009

Description:

aspnet_wp.exe (PID: %1) failed to startup because the synchronization event could not be initialized

The following files have different versions:

aspnet_isapi.dll

System.Web.dll.



CAUSE
This problem occurs when you have two different versions of some Microsoft .NET Framework 1.1 files installed in the Application Center cluster. Two different versions of some files may be installed when you install a .NET Framework service pack on a member server.

If you install a service pack on a member server and not on the controller, the controller replicates an earlier version of the Internet Server API (ISAPI) filter. This filter was updated on the member server when you installed the service pack. Therefore, on the member server, the System.web.dll file may be version 1.1.4322.2032 (SP1) and the ISAPI filter Aspnet_isapi.dll file may be version 1.1.4322.573.

Note This problem may occur when you install any .NET Framework service pack on a member server.



RESOLUTION
To resolve this problem, use one of the following methods:
 * Make sure that the versions of the .NET Framework 1.1 match in the Application Center cluster. When you install the .NET Framework 1.1 service pack in the cluster, you must install the service pack on the cluster controller first. Then, you must install the service pack on all the member servers.
 * Remove the .NET Framework 1.1 service pack from the member server.

Note When you install a .NET Framework service pack, it is a good idea to turn off replication until you have installed the service pack on all the member servers.



MORE INFORMATION
For more information about the .NET Framework service packs, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn2.microsoft.com/en-us/netframework/default.aspx

Keywords: kbtshoot kbinfo kbprb KB887286

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