Unable to cast COM object of type 'Microsoft.Office.Interop.Outlook.ApplicationClass' error

[saransrs (saravanan SR)]

Hi All,

getting below error while using outlook activity in uipath,please help with fix.

Send Outlook Mail Message: 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: Interface not registered (Exception from HRESULT: 0x80040155

Regards
Saravanan S R

[loginerror (Maciej Kuźmicz)]

Hi @saransrs

Could you try all solutions that were posted here:

Issue with office 2016 64bits

What I did is that I erase from the registry the key 00063001-0000-0000-C000-000000000046 now it is just saying that Send Outlook Mail Message : Object reference not set to an instance of an object. I guees I will try to fix this later on. regards.

[saransrs (saravanan SR)]

Hi @loginerror

Thanks for the solution…