Read downloaded email attachment

I am able to download the attachment but when another application is trying to invoke excel file it is throwing error
“Excel application scope : Excel cannot access ‘Desktop’. The document may be read-only or encrypted.”

Please suggest how can we solve this issue?


What happens when you try to open the file manually?

Did you check the user permissions for that file/folder and properties of Excel file? Is it happening same for another excel file in the same folder (desktop)?

When I have opened that file manually it was opened in normal mode(no issues).