Sending, receiving, and organizing email in Outlook on the web for business
I had the same issue and NOTHING worked to allow me to paste. What I did that worked, and I don't know why it worked, but it did, was I went to the right of the address box and clicked on "Install Outlook (PWA)" it opened a new window with my email and I still could not paste. I closed the window, and outlook closed completely requiring me to re-login to Outlook. When I did, I was then able to paste my text. Don't know why, but it worked. Can't say for how long it will work, but it did this time.