Lumia 822 problems opening e-mails containing files and downloading attachments

[Douglas Holloway]

Error message when trying to open what looks like a notes icon. Can't open attachment (ATT00001) (1KB). "The kind of file you are trying to open is not permitted on the phone"
Also, cannot open various pictures contained in e-mails as well as photo attachments. Running Outlook on Nokia Lumia 822.

 

[Laura Knotek]

What format are these attachments that cannot be opened?