IIS7 - Jeff Widmer's Blog

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You are not authorized to view this page due to invalid authentication headers.: I have been working through an authentication issue and making changes to IIS to debug the problem and then ran into the following IIS error: HTTP Error 401.2 - Unauthorized You are not authorized to view this page due to invalid authentication headers...
Posted 27 November 2012 04:17 PM by Jeff Widmer | with no comments
Filed under: IIS7

Show detailed Classic ASP error messages in IIS7 for both local and remote requests: In IIS7 you have to enable sending the detailed error message for Classic ASP. You can do this by configuring Classic ASP in IIS7: And then setting the “Send Errors to Browser” setting to true: Now you will get the detailed Classic ASP error message...
Posted 14 November 2012 09:07 PM by Jeff Widmer | 2 comment(s)
Filed under: IIS7, Classic ASP

The configuration section 'system.web.extensions' cannot be read because it is missing a section declaration: After upgrading an ASP.NET application from .NET Framework 3.5 to .NET Framework 4.0 I ran into the following error message dialog when trying to view any of the modules in IIS on the server. What happened is during the upgrade, the web.config file was...
Posted 11 November 2011 05:27 AM by Jeff Widmer | 2 comment(s)
Filed under: .NET, ASP.NET, IIS7, .NET 4.0

VB.NET IF() Coalesce and “Expression Expected” Error: I am trying to use the equivalent of the C# “??” operator in some VB.NET code that I am working in. This StackOverflow article for “ Is there a VB.NET equivalent for C#'s ?? operator? ” explains the VB.NET IF() statement syntax which is exactly what I...
Posted 18 June 2011 02:58 PM by Jeff Widmer | 2 comment(s)
Filed under: .NET, ASP.NET, Visual Basic, Visual Studio, IIS7, .NET Target Framework, VB.NET

MIME Type for .MP4 files is video/mp4: I almost made a mistake and put the wrong MIME Type into IIS7 for some MP4 videos that I am serving from a web server. A search for “MP4 mime type” returns two different results: video/mp4 (correct) video/mpeg (not correct) I was not so sure if...
Posted 17 February 2011 11:45 AM by Jeff Widmer | 4 comment(s)
Filed under: IIS7, MP4, MIME Types

From IIS6 maxRequestLength to IIS7 maxAllowedContentLengthFile – specifying maximum file upload size: IIS6 uses the maxRequestLength config setting under the system.web section to specify maximum file upload size with a default of 4 MB. IIS7 uses the maxAllowedContentLength config setting under the system.webServer section to specify maximum file...
Posted 24 September 2009 04:48 AM by Jeff Widmer | 16 comment(s)
Filed under: ASP.NET, IIS7, IIS6, IIS

Index Server and the Enable 32-Bit Applications Setting: We had a old website that made use of Microsoft Index Server and the Index Server COM objects (ixsso,Query). Everything was working fine on our Windows Server 2003 machines under IIS6. Then when we migrated to Windows Server 2008 and IIS7 our classic...
Posted 01 September 2009 09:03 PM by Jeff Widmer | 1 comment(s)
Filed under: IIS7, Index Server

Windows Server 2008 IIS7 SMTP properties: In Windows Server 2003 IIS6 you were able to change SMTP properties from within Internet Information Services (IIS) Manager. In Windows Server 2008 the IIS7 Manager does not handle SMTP anymore... but you can modify it by using the old IIS6 Manager...
Posted 28 August 2009 08:46 PM by Jeff Widmer | 2 comment(s)
Filed under: IIS7, Windows Server 2008, SMTP, IIS6