Develop Reference

Azure Keyvault stopped working on IIS hosted site

Hi I have a question regarding Azure keyvault and IIS. So our server provider did an windows patch:
2021-04 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5001347)
2021-04 Servicing Stack Update for Windows Server 2016 for x64-based Systems (KB5001402)
After this windows patch and restart of server our fetch from web.config to keyvault in Azure stopped to work.
When IIS is starting our app it can not find Microsoft.Configuration.ConfigurationBuilders.Azure
Even if the DLL is located in the bin folder.
One other important thing to mention is that our connectionStrings to the database that are located in their own file connectionstrings.config are working great with Azure Keyvault.
Our windows services on the same machine are also working great with Azure Keyvault.
So the issue is only affecting our appsettings section in our web.config.
We have tried to add the bin folder to privatePath in the web.config, that didnt help
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<probing privatePath="bin;modulesbin"/>
This works great on our STAGING machine which has the same windows updates and uses the same configs.
Does anyone have a clue what we can do next?
What we are using:
System.Configuration.ConfigurationBuildersSection, System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
<configBuilders>
<builders>
<add name="AzureKeyVault" vaultName=somevaultname"
type="Microsoft.Configuration.ConfigurationBuilders.AzureKeyVaultConfigBuilder, Microsoft.Configuration.ConfigurationBuilders.Azure, Version=1.0.0.0, Culture=neutral"
vaultUri="somevaulturi"/>
</builders>
</configBuilders>
Thanks for any help
Edit:
We have now installed newer Azure dlls.
Installed Azure CLI on server.
We hare now using AZURE_TENANT_ID, AZURE_CLIENT_SECRET, AZURE_CLIENT_ID instead of AzureServicesAuthConnectionString in the environment variables.
After reboot, the webapp, services, connectionstring stopped working.
Error message in Event viewer:
Exception message: An error occurred loading a configuration file: The specified user does not have a valid profile. Unable to load 'Microsoft.Configuration.ConfigurationBuilders.Azure
Everything still work as expected on our stage server.

AZURE_TENANT_ID was added correctly under Administrator environment variables
but under system environment variables it was added with AZURE_TENTANT_ID (one t too much)
Such a typo. All good now.

Error about Single Signon using Azure AD

I tried to implement a single sign-on app following the tutorial here
http://geoffwebbercross.blogspot.com/2014/05/adding-azure-ad-single-sign-on-to.html
I added an active directory in azure and added a user for this tenant. Then I built a small app in VS2013. I used organizational accounts and typed in the domain name, logged in and created the project. While creating the project, there poped up a dialogue box said
Request_BadRequest: Invalid value found for property 'identifierUris' fo resource 'Application'
And I closed that. I tried to run the project on my local machine. It will have the information like this.
HTTP Error 500.19 - Internal Server Error
The requested page cannot be accessed because the related configuration data for the page is invalid.
Detailed Error Information:
Module
IIS Web Core
Notification
Unknown
Handler
Not yet determined
Error Code
0x80070032
Config Error
The configuration section 'system.identityModel' cannot be read because it is missing a section declaration.
Config File
Requested URL
http:
Physical Path
Logon Method
Not yet determined
Logon User
Not yet determined
Request Tracing Directory
D:\My Documents\IISExpress\TraceLogFiles\
Config Source:
34: </system.web>
35: <system.identityModel>
36: <identityConfiguration>
More Information:
This error occurs when there is a problem reading the configuration file for the Web server or Web application. In some cases, the event logs may contain more information about what caused this error.
If you see the text "There is a duplicate 'system.web.extensions/scripting/scriptResourceHandler' section defined", this error is because you are running a .NET Framework 3.5-based application in .NET Framework 4. If you are running WebMatrix, to resolve this problem, go to the Settings node to set the .NET Framework version to ".NET 2". You can also remove the extra sections from the web.config file.
View more information »
Any ideas of how to solve this issue?

I'm not sure what the root cause was (why you got the error while creating the project), but the following should resolve the error you're seeing when running the app.
In the the <configSections> section of your web.config you need to have the system.identityModel section defined. The entries should look something like this:
<configSections>
<section name="system.identityModel" type="System.IdentityModel.Configuration.SystemIdentityModelSection, System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<section name="system.identityModel.services" type="System.IdentityModel.Services.Configuration.SystemIdentityModelServicesSection, System.IdentityModel.Services, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
</configSections>

System.Security exception on asp.net webpage - c#

I am having an issue where when I run my asp.net website, I get a security exception to do with the trust level in the config file. I have tried adding the following code into the config file in the solution, but no luck;
<securityPolicy>
<trustLevel name="Full" policyFile="internal"/>
</securityPolicy>
Description of the 'Security Exception' -
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.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
I am only trying to run this locally from Visual Studio, and it has been working before.
We have recently moved our environments from working in a TS session (where vs2010 is), to having our own virtual machines (where vs2012 is). To get to the VS2010, we have to remote in from our virtual machine, and each time we log in it brings over our documents folder and everything. Could it be to do with this, logging in from somewhere else causes permission issues?
Many thanks.

launching a web service (.asmx) in a IIS 6.0

I have developed a web service with the .asmx extension using C# and i want to deploy this into my VPS which has Windows Server 2003 with IIS 6.
Service is running with Framework 4.0 and it's installed in the VPS also. When I upload the precompiled version into the VPS it shows a runtime error
Server Error in '/' Application.
Runtime Error
Description: An application error
occurred on the server. The current
custom error settings for this
application prevent the details of the
application error from being viewed
remotely (for security reasons). It
could, however, be viewed by browsers
running on the local server machine.
Details: To enable the details of this
specific error message to be viewable
on remote machines, please create a
<customErrors> tag within a
"web.config" configuration file
located in the root directory of the
current web application. This
tag should then have
its "mode" attribute set to "Off".
<!-- Web.Config Configuration File -->
<configuration>
<system.web>
<customErrors mode="Off"/>
</system.web>
</configuration>
Notes: The current error page you are
seeing can be replaced by a custom
error page by modifying the
"defaultRedirect" attribute of the
application's <customErrors>
configuration tag to point to a custom
error page URL.
<!-- Web.Config Configuration File -->
<configuration>
<system.web>
<customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/>
</system.web>
can anyone help me on this?
Update
Server Error in '/' Application.
Configuration Error
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: Unrecognized attribute 'targetFramework'. Note that attribute names >are case-sensitive.
Source Error:
Line 26:
Line 27:
Line 28:
Line 29:
Line 30: Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
Source File: C:\Inetpub\vhosts\akashvahini.com\httpdocs\web.config
Line: 28
Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET >Version:2.0.50727.3053
this is the new error message after enabling debugging in the web.config

You should enable debugging to diagnose the problem.
Microsoft has a very detailed explanation on how to enable detailed debugging over here.
Server Error in '/' Application.
That error is too generic, check the output after you enabled debugging and post the results.
And don't forget to disable debugging after your site goes live.
Update:
Seems to be permission related:
http://forums.iis.net/p/1042369/1454379.aspx
The ASPNET user account needs permissions for the folder that contains your asmx service.
Update2:
You can give the ASPNET user permissions using the file system permission dialog:
http://www.asp.net/learn/whitepapers/denied-access-to-iis-directories
Might look different on newer versions of Windows.

From my experience "Server Application Unavailable" means that you have got web sites that use different versions of .net in the same application pool.
the site that hosts your webservice needs to be in an app pool that only has .net 4.0 web sites. The application pool is configured on the Home Directory tab in the web site properties.

Looks to me like the application pool is trying to run two difference versions on .net.
Make a new application pool and call it something like .Net4 and then move the new site across to use this app pool and everything should work.
This error is shown by
Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET >Version:2.0.50727.3053
Where the site with a .asmx should say .Microsoft .NET Framework Version:4.0 etc...

How to solve a "HTTP Error 404.3 - Not Found" error?

Simple problem. I start up VS2008 and create a new WCF Service application. This will create a default application with a few test methods showing it works. I press CTRL+F5 and it does indeed work! Great! However, it uses the Visual Studio Development server, which I don't want to support.
So I go to the project properties, switch to using a local IIS Web server, create the virtual directory and press CTRL+F5 again. And this "HTTP Error 404.3 - Not Found" error is greeting me back.
So something in my IIS7/Vista-64 setup is wrong. What could I be missing?

Click Start -> Run cmd and type:
cd "\Windows\Microsoft.NET\Framework\v3.0\Windows Communication Foundation"
ServiceModelReg.exe -i

If you faced this problem for the first time. with Windows 8 and IIS 8.0 make sure to activate Windows Communication Foundation HTTP windows feature.
Go to Control Panel select "Programs and features"
From the lift hand side menu select "Turn Windows features on or off".
Expand ".Net Framework 3.5 (includes .NET 2.0 and 3.0)" item
Finally select "Windows Communication Foundation HTTP Activation"
Enjoy your WCF Servcie.

The problem, however, is then to re-register ASP.Net to IIS, which is explained below.
And also if you're on a 64bit machine always use Framework64 paths: C:\Windows\Microsoft.NET\Framework64\v4.0.30319>aspnet_regiis.exe -iru
Below is the explanation from Microsoft:
http://download.microsoft.com/download/0/A/E/0AEB3BC1-506E-4954-8AB1-4FA2EE75985C/ReleaseNotes.docx
When attempting to run a service that receives messages over the HTTP transport, you may receive an error similar to the following:
Server Error in '/WCFApplication' Application
Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
Description: An unhandled exception occurred during the execution of the current Web request. Review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.TypeLoadException: Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
This error can occur when IIS is installed after installing .NET Framework 4, or if the 3.0 version of the WCF Http Activation module is installed after installing IIS and .NET Framework 4.
To resolve this problem, you must use the ASP.NET IIS Registration Tool (Aspnet_regiis.exe,) to register the correct version of ASP.NET. This can be accomplished by using the –iru parameters when running aspnet_regiis.exe as follows:
aspnet_regiis.exe -iru
And credit, where it's due: Source

I had to tick "HTTP Activation" in "Add Role Services" within Windows Server 2012.

try to install IIS by expanding your Internet information service and then check ASP.Net 3.5 or ASP.Net 4.5 and ISAPI.... in root of world wide.........
please look image to more help

I tried running ServiceModelReg and aspnet_regiis.exe with various flags and added HTTP Activation feature but it still didn't work. What finally worked was adding the following handler manually to my web.config file.
<system.webServer>
<handlers>
<add name="svc-Integrated" path="*.svc" verb="GET,HEAD,POST,DEBUG" type="System.ServiceModel.Activation.HttpHandler, System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" modules="ManagedPipelineHandler" scriptProcessor="" resourceType="Unspecified" requireAccess="Script" allowPathInfo="false" preCondition="integratedMode" responseBufferLimit="4194304" />
My project was running .Net 3.5 and IIS was 7.5 and 7.0.