This particular issues appears when you F5 (or Debug->Start Debugging) your web application or website to begin debugging your website.  The following message appears.

The first step to resolve this issue is to verify the Local IIS Web Server location you're attempting to debug.  By right-clicking your project within Visual Studio and click Properties, then navigate to the Web tab of your project properties.  You'll notice under the Server section of the interface your selection of Use Local IIS Web server and the coresponding Project Url.  It should appear as such: 

The solution within IIS 6 is to open IIS Manager within Administrative Tools, right click the website corresponding to the Project Url within Visual Studio and click properties.  This particular error implies that integrated Windows Authenticatin is not enabled within IIS, so navigate to the Directory Security tab, click the Edit button under Authentication and access control

and ensure that the Integrated Windows Authentication checkbox is selected, click OK through the dialog boxes and retry.

HTH,

Jeff

I've been bothered by being constrained by the header validation within the HttpWebRequest object several times.  The constraints, IMO, are a little too constrictive on what can and can't be added to the HttpWebRequest object.  Here's a solution.  I've implemented the methods as extension methods on the HttpWebRequest object.  The first gives you internal access to the WebHeaderCollection object that the HttpWebRequest provides access to, the second HeadersRaw provides completely uninhibited access to the header collection via the WebHeaderCollection object's internal NameValueCollection.

I haven't done a great deal of testing on this particular solution, but it should be pretty straight forward to utilize.  I'm a little weary of potential threading issues given that I've implemented this as an extension method and what used to be fields of an object are now static fields.  So, do some testing if you're planning on using this in a multi-threaded scenario.  To utilize, you'll want to add the WebRequest namespace (or whatever you rename it as) to your sourcecode, then you'll have access to the raw header objects via the following:

WebHeaderCollection header1 = request.HeadersUnAuthenticated();

or 

NameValueCollection header2 = request.HeadersRaw();

WebRequest.zip (3.30 kb)

Good luck!

Jeff

This particular issues appears when you F5 (or Debug->Start Debugging) your web application or website to begin debugging your website and your host header with port number does not match the host header and port number entered in visual studio (where your host header matches, but port # does not).  The following message appears.

The first step to resolve this issue is to verify the Local IIS Web Server location you're attempting to debug.  By right-clicking your project within Visual Studio and click Properties, then navigate to the Web tab of your project properties.  You'll notice under the Server section of the interface your selection of Use Local IIS Web server and the coresponding Project Url.  It should appear as such:

The solution within IIS 6 is to open IIS Manager within Administrative Tools, right click the website corresponding to the Project Url within Visual Studio and click properties.  This particular error implies that your Url is mal-formed.  The thing to do is to match the host header you've specified within your Project Url and verify the port number specified for that host header within IIS.

By clicking the Advanced button

you can click one of the identities in the list and verify that the port number specified within the IIS matches that within Visual Studio and rectify if necessary.

HTH,

Jeff

This particular issues appears when you F5 (or Debug->Start Debugging) your web application or website to begin debugging your website and your host header with port number does not match the host header and port number entered in visual studio.  The following message appears.

 The first step to resolve this issue is to verify the Local IIS Web Server location you're attempting to debug.  By right-clicking your project within Visual Studio and click Properties, then navigate to the Web tab of your project properties.  You'll notice under the Server section of the interface your selection of Use Local IIS Web server and the coresponding Project Url.  It should appear as such:

The solution within IIS 6 is to open IIS Manager within Administrative Tools, right click the website corresponding to the Project Url within Visual Studio and click properties.  This particular error implies that your Url is mal-formed.  The thing to do is to match the port number you've specified within your Project Url and verify the Host header specified for that port number within IIS.

By clicking the Advanced button

you can click one of the identities in the list and verify that the host header value specified within the IIS matches those within Visual Studio and rectify the if necessary.

HTH,

Jeff

Found an error in this url, refer to this blog article is here - Unable to start debugging the web server.  Debugging failed because integrated Windows authentication is not enabled.

HTH,

Jeff

I've been wanting to put this attempt at a comprehensive list of web server debugging problems together for some time.  I've seen a variety of these myself and, at times, have had difficulty trying to hunt down the exact cause of the issue.  So, I thought that I'd invest a little time myself to try and put to rest the list of potential sources of this problem and provide descriptive resolutions to each particular scenario.  Let me know if I've overlooked any causes.

Unable to start debugging the web server.  Debugging failed because integrated
Windows authentication is not enabled.

Unable to start debugging on the web server. The debug request could not be processed
by the server due to invalid syntax.

Unable to start debugging on the web server. Unable to connect to the web server.
Verify that the web server is running and that incoming HTTP requests are not blocked by a firewall.

HTH,

Jeff

I found an irritating issue while using the GridView with LinqDataSource associated tables tonight.  Apparently, attempting to utilize an associated table (via foreign key) with the LinqDataSource within a <asp:BoundField> just doesn't work when putting the LinqDataSource into edit mode using any of the EnableDelete, EnableUpdate or EnableInsert LinqDataSource properties.  If you attempt this within the <asp:BoundField> you receive the error message:

A field or property with the name 'Table.Field' was not found on the selected data source.

You need to convert your <asp:BoundField> into an <asp:TemplateField> and voila problem solved.  Here's some sample code for reference.

Failed - <aspLabel ID="lblField" runat="server" Text='<%# Eval("Table.Field") %>' /></ItemTemplate></asp:TemplateField>

HTH,

Jeff

I just fixed a couple bugs in BlogEngine.net's twitter widget being added to the page more than once.  Check out the issue and fix here for how to utilize more than one twitter widget on your BlogEngine.net site.