When you attempt to access the Application Server's service page or the Web Client login page, one of the following errors may be displayed:
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HTTP 500.21 - Internal Server Error Handler "PageHandlerFactory-Integrated" has a bad module "ManagedPipelineHandler" in its module list
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HTTP 500.21 - Internal Server Error Handler "WebServiceHandlerFactory-Integrated" has a bad module "ManagedPipelineHandler" in its module list
This issue may occur under either of the following conditions:
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The required version of Microsoft .NET Framework is not installed, or
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The .NET Framework was installed prior to the installation of Internet Information Services (IIS).
To address this issue, perform the following steps on the Web Server and Application Server: