May 08 2020 12:22 AM
Sep 19 2020 01:26 AM - edited Sep 19 2020 01:52 AM
@hgrooten I have exactly the same. Some users have no option to upload files (in a chat-window) and with my account there is no problem. I'm now searching in the policies for Microsoft Teams. But nothing found yet. When normal users would like to upload files, they also see the 'Onedrive for Business' warning.
I am an administrator so that is maybe why I have the rights. In my Office365 account I can not find an option for selecting Onedrive for Business or something similar.
Dec 02 2020 02:20 PM
Hi @JeffHenson and all: there is a past post with a similar issue and the solution seems to be in the permissions: Unable to Upload Files to Teams - Microsoft Tech Community
Does this help?