Description:
Pre-requsites
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Take a backup of the the plugin shipped with CLR-IT 3.1.2 - com.tibco.clr.clrhost.native_3.0.0.052.jar

(This jar is located in &ltTIBCO_AMX_HOME>\components\shared\1.0.0\plugins)

Installation steps:
==============
(1) Make sure that SystemHost and all other nodes on this host (like SystemNode) are stopped.
(2) Delete com.tibco.clr.clrhost.native_3.0.0.052.jar from &ltTIBCO_AMX_HOME>\components\shared\1.0.0\plugins directory.
(3) Download attachment com.tibco.clr.clrhost.native_3.0.0.052_win2008r2.jar and copy it to &ltTIBCO_AMX_HOME>\components\shared\1.0.0\plugins folder.
(4) Rename com.tibco.clr.clrhost.native_3.0.0.052_win2008r2.jar to com.tibco.clr.clrhost.native_3.0.0.052.jar.

Configuration-change:
====================

In order to get CLR-IT working on Windows Server 2008 R2, it is required to apply this workaround before provisioning the CLR IT Application Template on a target node. The steps to provision the CLR IT Application Tempate are described in Chapter 4 of "TIBCO ActiveMatrix Implementation Type for Microsoft CLR Component Development" guide under section "Deploying DAA Containing CLR IT Components". URL link:-

https://docs.tibco.com/emp/activematrix_implementation_type_for_microsoft_clr/3.1.2_april_2011/html/wwhelp/wwhimpl/js/html/wwhelp.htm#href=tib_amx_it_clr_component_development/compdev.4.21.htm#1681218

Excerpt provided below:-

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Provisioning the CLR IT Application Template
To provision the CLR IT Application Template:
1. Start TIBCO ActiveMatrix Administrator.
2. In the Applications link, click New. The Application Setup dialog appears.
3. Enter the Application Name.
4. Select the option An existing application template and click Next.
5. Select the TIBCO ActiveMatrix Implementation type for Microsoft CLR Application Template and click Next.
6. Click Save and Exit.
The application template with its runtime state "Not Deployed" is added to the list of applications.
7. In the application properties area, click the Distribution tab and select the nodes on which you want to provision the application template.
8. Click Save and Deploy.
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TIBCO ActiveMatrix(R) Implementation Type for Microsoft CLR 3.1.2 now supports Windows Server 2008 R2 platform