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When trying to open or add an event in the Outlook Add-in, this error displays:

AddinExpress.OLADXOIFormsManager error

Products affected: Outlook Add-In

Versions affected: Any


If you have problems with your exchange server, you may experience this issue.

To resolve it, uninstall the Outlook Add-in. Remove the OfficeAddinSettings.config file from your ACS Technologies folder, then reinstall the add-in.