# Setup: What is the purpose of the COM+ applications in WorkflowGen?

**URL:** <https://discuss.workflowgen.com/t/setup-what-is-the-purpose-of-the-com-applications-in-workflowgen/121>\
**Category:** Installation\
**Created:** [July 28, 2013, 12:48am UTC](https://discuss.workflowgen.com/t/setup-what-is-the-purpose-of-the-com-applications-in-workflowgen/121 "2013-07-28T00:48:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![wfg-admin](https://yyz2.discourse-cdn.com/flex030/user_avatar/discuss.workflowgen.com/wfg-admin/32/714_2.png) [@wfg-admin](https://discuss.workflowgen.com/u/wfg-admin)\
**Post date:** [July 28, 2013, 12:48am UTC](https://discuss.workflowgen.com/t/setup-what-is-the-purpose-of-the-com-applications-in-workflowgen/121/1 "2013-07-28T00:48:34Z")

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**Note:** Since WorkflowGen version 6.x.x, no more COM+ applications are required.This article applies to WorkflowGen 5.x.x only.

What is the purpose of the `MSScriptControl` and `FDF` COM+ applications?

COM+ applications are required when IIS and the WorkflowGen Engine service are running in 64-bit.

The `Msscriptcontrol` application is used in workflow conditions, but as of WorkflowGen version 6.x.x, a new technical solution has replaced the use of `MsScriptControl` with a .NET solution.

The `FDF` application provides support for PDF forms, and is not required for web form users.