Many chrome & AOL users have faced this problem where the they are unable to open the AOL attachments in the Chrome Browser. To fix this problem, you have to update your Chrome Browser to the latest version with the help of following steps:
1) Open your Chrome Browser & Go to settings
2) Now search for Updates & if there is any, then let it download & install automatically.
3) Then, restart your chrome browser & now you should try to open the AOL Mail Attachments.
If you're facing this problem in your Phone's browser, then you can refer to this article: https://emailspedia.com/aol-mail-attachments-not-opening-in-chrome/