Windows Server 2008 R2 – permissions for COM objects

Sometimes it is needed to set individual user permissions to chosen COM objects like (Excel). Here is short explanation what are these permissions and how to set them:

Dcomcnfg.exe provides a user interface for modifying certain settings in the registry. By using Dcomcnfg.exe, you can enable security either on a computer-wide or a process-wide basis. … Or you can use Dcomcnfg.exe to enable security for a particular application only.

And here is practical example how to use it:

  1. Reports generated in Excel don’t work invoked via VisualBasic Script using Windows Task Scheduler:


Create folders:



and set up:

Add Local Launch and Local Activation permissions to the Microsoft Excel Application DCOM Config.

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