Users should determine whether they are experiencing this problem across all apps or simply on one device when using their AOL emails.
We've compiled a list of a few potential solutions to help you fix your Http error 504 AOL mail error:
Refresh the device
- Close your browser window once and then reopen it.
- You can also refresh the page by pressing F5 or using the browser's side option.
- There could potentially be an issue with your device's proxy settings.
- Try opening it in a new browser altogether; if it works in other browsers, the issue is with that one.
- You can try uninstalling and reinstalling it to see if the Http error 504 AOL mail problem still exists.