In this regard, why can’t I remove message for everyone on messenger?

It turns out that when people are deletingmessages because it’s a mistake or they sent something theydidn’t want to send, it’s under a minute. People with access to thefeature can tap and hold on a message they sent and selectRemove, and they will see options for Remove forEveryone or Remove for You.

Subsequently, question is, when you delete a conversation on Facebook does the other person still have it? You can delete the conversation. If youdo so only your copy of the Chat is permanentlydeleted and the other person still possess their ownCopy irrespective of the changes made to yours. And there isnot gonna be a Notification, no one (except you) will everknow that you deleted the conversation untilyou tell them.

One may also ask, can you delete messages on messenger?

Open a conversation with messages you‘d like todelete. Press and hold on a message, or select thethree dots menu icon on desktop. Select “remove” nextto the message. Select “remove for everyone” –that makes sure that the messages disappear from the inboxesof the people you sent them to, not just from yourown.

How do you delete messages on Facebook so the other person cant see it?

It isn’t possible to delete sent or receivedmessages from a friend’s inbox. However there is someworkaround is to mark the message as Spam or Abuse (inActions), then delete it from your messages, anddisable/deactivate your account (and re-activate it after fewhours), so both people won’t see it.