I'm getting this error when building and running an website

Server Error in '/' Application.

Security Exception

Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
System.Security.CodeAccessSecurityEngine.Check(Obj ect demand, StackCrawlMark& stackMark, Boolean isPermSet) +0
System.Security.CodeAccessPermission.Demand() +58
System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) +644
System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) +66
System.Configuration.Internal.InternalConfigHost.S taticOpenStreamForRead(String streamName) +85
System.Configuration.Internal.InternalConfigHost.S ystem.Configuration.Internal.IInternalConfigHost.O penStreamForRead(String streamName, Boolean assertPermissions) +124
System.Configuration.Internal.InternalConfigHost.S ystem.Configuration.Internal.IInternalConfigHost.O penStreamForRead(String streamName) +10
System.Configuration.Internal.DelegatingConfigHost .OpenStreamForRead(String streamName) +13
System.Configuration.UpdateConfigHost.OpenStreamFo rRead(String streamName)

Can anyone help me please, I'm been in this for the past more hours...

I really appreciate all the help you can give me!

Thanks in advance

Phuc Hoang

Hi...

You are clearly attempting to write to the disk and you don't have permissions.. I don't know if we can do anything else, unless you know exactly where this happens, and where you are trying to write info...

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Gonzalo

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It appears your site is running in what's called Medium Trust.Is this a site hosted with an ISP? If so, you either need to remove the dependency on the IO actions in your site, or move to a site that allows for higher trust levels.

For more info:

http://www.google.nl/#hl=nl&source=h...b3a3d1601fd84c

Cheers,

Imar

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Imar Spaanjaars
http://Imar.Spaanjaars.Com
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Author of Beginning ASP.NET 4.5 : in C# and VB, Beginning ASP.NET Web Pages with WebMatrix
and Beginning ASP.NET 4 : in C# and VB.
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How can i control the site , in the host , may be the host know it .I do not know my site is running Medium Trust or not, in the normal the site is run the Medium Trust, it is safety.

What should i do now in order to my site is work
I do not really know it

I really appreciate all the help you can give me!

Thanks & Best Regards

Phuc Hoang

If you're not resonsible for the hosting of your site, you should contact the party that hosts your site. They know whether it runs in Medium Trust or not, because if it does, they did that deliberately.

Cheers,

Imar

__________________
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Follow me on Twitter

Author of Beginning ASP.NET 4.5 : in C# and VB, Beginning ASP.NET Web Pages with WebMatrix
and Beginning ASP.NET 4 : in C# and VB.
Did this post help you? Click the button below this post to show your appreciation!

Thanks for helping me.
I will try to contact with the host site

Thanks & Best regards

Phuc Hoang