John,
I checked on Firefox and I believe you're correct, I cannot find any settings to prevent using the clipboard, so I'm not sure what the issue could be there.
MacPheDJ,
The lock icon is just to the left of the "https://" in the browser in Edge. My coworker had the option to copy and even had the option to paste on the right-click menu, but when pasting, nothing would happen. I replied to Risdon & Risdon because their issue sounded similar to the one we were having, not necessarily all the issues for everyone on this thread. I apologize for upsetting you, I was only trying to help others with the solution I found. If the paste option is not showing up, that sounds like a different issue that I cannot help with. I don't work for Microsoft, I'm just a user trying to help where I can.
Sorry for the misunderstanding. I'm not upset. That happened months ago when I first encountered this problem. More like irritated by it. I'm fairly sure that the issue is with the embedded apps in the page and not a browser setting. I believe this on 2 parts. One, I use Hotmail, which is now Outlook.Live (paste works fine). Basically a lesser version of Outlook.Office365. Not as many extras. And 2, because I can still CTRL+v and paste that way. If clipboard was being blocked, I would think that any way to use it would be prevented and not just the right click also, copying works without problems. The only paste problem I have on any computer (this problem happens on any computer I've tried) is only on Outlook 365. I'm just guessing here, but maybe they think by doing this people will install Outlook on their devices.