Fixing GUIDs on Task Panes for Essential 8

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aberglas

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Sep 27, 2025, 8:11:08 PM (4 days ago) Sep 27
to Excel-DNA
Hello,

Modern security likes to white list COM addin progids or Guids.  However for ExcelDNA task panes there seems to be an internal wrapper and no way to specifie these.

I tried the following, but they seem internal.

               using (new SingletonClassFactoryRegistration(userControl, clsId))
                using (new ProgIdRegistration(progId, clsId))
                using (new ClsIdRegistration(clsId, progId)) {

 CustomTaskPaneFactory.CreateCustomTaskPane(progId, "Formulas and Bookmarks");

Any thoughts?  (Annotations work fine for ordinary COM root.)
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