Help…Can’t open Email Attachments

I am looking for help in opening email attachments.   For some reason i cannot get any attachments on my incoming emails to open.  When i click on them, a pop up box appears which has three choices: Open, Save, Save As; when i click any of these, basically nothing happens?  I can do the "view online" option, but this does not allow me to print, etc.

I had this occur a few months ago and was able to do something through the "tools" to fix it, but now i cannot seem to figure it out?

I am using Outlook for my email.

Any suggestions would be greatly apprciated!