Deep dive into various configurations with Oracle Weblogic Server

Configure WLS Web Server Proxy Plug-In for Internet Information Services 8.5 (IIS)

Puneeth Prakash
Principal Software Engineer

In this example, I have IIS v8.5 installed on Windows 2012R2 forwarding request to WLS 10.3.6 using WLS Plugin 1.1

NOTE: The steps mentioned in this blog are generic and should work with WLS Plugin 12c and Weblogic version 12c (including

Step 1:

Install IIS 8.5 on Windows 20012 R2.

NOTE: Even if you have IIS installed, perform this step to make sure all the required roles are enabled.

Open Service Manager -> Add roles and features.

Select "Role-based or feature-based installation".

-> "Select a server from the server pool"

-> Select "Web Server (IIS)" and enable all roles under it.

NOTE: It is important to enable ".NET Extensibility 3.5" and ".NET Extensibility 4.5" and all other roles under Web Server IIS.

Step 2:

Download Weblogic Plug-In from the following URL :


In this case, I am downloading "Oracle WebLogic Server Proxy Plugins 11gR1 (".

Step 3:

Extract the downloaded plugin zip file to any location.

Example : unzip "ofm_wlsplugins_generic_11."->"WLSPlugin11g-64bit-IIS-win64-x64.zip" to "C:\WLS_IIS_plugin_11gR1"

Step 4 :

Create a file called "iisproxy.ini with the following details :


NOTE: This file should be placed in the <plugin>/lib folder.

Step 5:

Add this location to PATH variable in "Control Panel" -> "System" -> "Advanced system settings" -> "Advanced" -> "Environment Variables" -> "System variables" -> Path -> "Variable value" : C:\WLS_IIS_plugin_11gR1\lib\

NOTE: Make sure you add it at the start of the Path variables. (Example: %JAVA_HOME%\bin;C:\WLS_IIS_plugin_11gR1\lib\;%SystemRoot%\system32;... and so on)

Step 6:

Let's add a new Website using IIS Manager:

Step 7:

Sites -> Add new Website and enter the following details :

Site name: test

Content Directory -> Physical path: C:\WLS_IIS_plugin_11gR1\lib

Binding -> Port: 90

Step 8:

Under IIS -> select "Handler Mappings":

Step 9:

Under "Handler Mapping" -> "Actions" -> select "Add Script Map" and enter the following details :

Request path: *

Executable: C:\WLS_IIS_plugin_11gR1\lib\iisproxy.dll

Name: wls

Click on "Request Restrictions" and uncheck "Invoke handler only if the request is mapped to":

Step 10:

Enable Directory Browsing

Step 11:

Access application deployed on Weblogic using IIS hostname and port.

Example: http://localhost:90/benefits

Additional Steps:

1) Select "test" website -> Basic Settings -> "Test Settings" -> You could see an authorization warning:

"The server is configured to use pass-through authentication with a built-in account to access the specified physical path. However, IIS Manager cannot verify whether the built-in account has access. Make sure that the application pool identity has Read access to the physical path. If this server is joined to a domain, and the application pool identity is NetworkService or LocalSystem, verify that <domain>\<computer_name>$ has Read access to the physical path. Then test these settings again."

Ignore this message.

Login to Windows 2012R2 machine as Administrator and set the permissions for plugin folder:

Edit the Permission for all users and "Allow" "Full control" for folder "C:\WLS_IIS_plugin_11gR1"

I noticed that the Authorization warning message is still seen after making this change.

2) Refresh and restart the "test" website 

3) Stop and Start IIS

4) We have specified "WLLogFile=C:\WLS_IIS_plugin_11gR1\iis.log" in the iisproxy.ini file. If the iis.log file is not generated in this location then create an empty file "iis.log" and the logs should get appended:

5) Set "Failed Request Tracing Rules" to get additional information in case of errors:









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