Desktop outlook app error

[Palaniyappan (Palaniyappan P)]

@raven

System.Runtime.InteropServices.COMException

Hi

Try with these steps

1. Close your outlook application if opened
   Restart your studio also and give a try

2. If that doesn’t work, then I’m studio go to Design Tab → Manage Packages → Project Dependencies-> search for UiPath.Mail.Activities
   Uninstall it even if it’s latest package and reinstall again the latest package and then give a try after restarting studio

3. Finally get through this knowledge base from UiPath and try with the resolution mentioned here

Unable To Cast COM Object Of Type 'Microsoft.Office.Interop.Outlook.ApplicationClass' To Interface Type 'Microsoft.Office.Interop.Outlook._Application'. This Operation Failed Because The QueryInterface Call On The COM Component For The Interface With IID

Send Outlook Mail Message activity is not working and get the following error " Unable to cast COM object of type 'Microsoft.Office.Interop.Outlook.ApplicationClass' to interface type 'Microsoft.Office.Interop.Outlook._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{00063001-0000-0000-C000-000000000046}' failed due to the following error: Library not registered." Root Cause: The issue is caused by a wrong registry file, this …

Cheers @raven