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Error message when an ASP.NET application tries to create a new application domain: "Can not access file 'System.Web' because it is being used by another process"
Consider the following scenario. You create a Microsoft
ASP.NET application. The application tries to create a new application domain.
In this scenario, you may receive the following configuration error message in
the Web browser:
Description: An error occurred during the processing of a
configuration file required to service this request. Please review the specific
error details below and modify your configuration file appropriately.
Parser Error Message: Can not access file 'System.Web' because it is
being used by another process.
- In this error message, the words "can not" are a misspelling for the word "cannot."
- This problem is more likely to occur when the Web server is under
a heavy load.
This problem occurs when a process modifies the
Machine.config file at the same time that the System.web.dll file tries to
access the Machine.config file. This causes a file sharing violation.Note
The error message that is mentioned in the "Symptoms" section
indicates that the System.web.dll file cannot be accessed. However, the problem
is that the Machine.config file cannot be accessed by
the System.web.dll file.
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section.
Article ID: 919079 - Last Review: July 6, 2006 - Revision: 1.3
- Microsoft ASP.NET 1.0
- Microsoft ASP.NET 1.1
- Microsoft ASP.NET 2.0
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