Application Request Routing IIS

IIS Application Request Routing (ARR) 2.5 enables Web server administrators, hosting providers, and Content Delivery Networks (CDNs) to increase Web application scalability and reliability through rule-based routing, client and host name affinity, load balancing of HTTP server requests, and distributed disk caching. With ARR, administrators can optimize resource utilization for application servers to reduce management costs for Web server farms and shared hosting environments.

Microsoft Application Request Routing (ARR) for IIS 7 and above is a proxy-based routing module that forwards HTTP requests to content servers based on HTTP headers, server variables, and load balance algorithms. ARR can be used to:

• Increase application availability and scalability.
• Better utilize content server resources.
• Facilitate application deployment including pilot management and A/B testing.
• Lower management costs and create opportunities for shared hosters.

Install Application Request Routing

The Application Request Routing installer package contains the following components:

• Microsoft URL Rewrite Module for IIS.
• Microsoft Web Farm Management Version 1 for IIS.
• Microsoft Application Request Routing Version 1 for IIS.
• Microsoft External Cache Version 1 for IIS.

Download:

Microsoft Application Request Routing Version 2.5 for IIS 7 (x64)

Microsoft Application Request Routing Version 2.5 for IIS 7 (x86)

Error message after you install the .NET Framework 4.0: "Could not load type 'System.ServiceModel.Activation.HttpModule'"

ASP.NET > HttpModule

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. Please review the stack trace for more information about the error and where it originated in the code.



To resolve this issue, run the following command line:


aspnet_regiis.exe /iru

The Aspnet_regiis.exe file can be found in one of the following locations:

%windir%\Microsoft.NET\Framework\v4.0.30319

%windir%\Microsoft.NET\Framework64\v4.0.30319 (on a 64-bit computer)

IIS Error: This configuration section cannot be used at this path.

IIS Error: This configuration section cannot be used at this path.
This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault=”Deny”), or set explicitly by a location tag with overrideMode=”Deny” or the legacy allowOverride=”false”.
Note: When you meet this error you must consider where IIS locates your error. For example, in the image above the error relates to handlers tag. I have this error twice when publish WCF Services, one with handlers and one with modules.

Solution:
- Navigate to C:\Windows\System32\inetsrv\config
- Right click on file applicationHost.config and open it with Notepad
- Search and find the tag which IIS has error with it and edit overrideModeDefault = “Allow”. Remember to save file before close it