You received an e-mail file attachment and want to open and edit it in Online Office, but you cannot find the file.
You have stored the file locally on your hard drive by clicking Open/Save on hard drive.
You can only open and edit e-mail file attachments in Online Office, if the file has been stored in your File Storage.
Therefore upload the file that you want to open and edit in your File Storage.
You have stored the file in your File Storage by clicking on Quickly save in File Storage.
If you have used this function to save the file in your File Storage, the file has been stored in /New File Attachments.