Hello.
I have problem with lastest version of TeamViewer. I think it could be bug.
When I start meeting in lastest version v15.28.5 partners with older version can join without problems. So if partner has v15.28.5 he cannot join meeting and gets error dialog: "Your partner does not support file transfer. Use remote control to join." But I don't want, this is not reason.
When I downgrade TeamViewer to v15.27.3 I haven't problems.
Thank you for answer.