Issue:
When trying to invite users to an Autodesk Account, the following error message is displayed, "Users weren't added due to network problems. Users weren’t assigned."
This is followed by a list of the user(s) who weren’t added.
Causes:
The user has already been added to the account, but as a guest.
When users are added to an Autodesk Forma (Formerly ACC/BIM360) account hub, they are automatically added as guests to the Autodesk Account.
Solution:
To see the user(s) in your Autodesk Account, go to User Management>>By User, and toggle on "Show Guests".
To change their role, go to User Management>>By User, select the user, and then change their role to User.
Alternatively, remove the user(s) from the Autodesk Account, and re-add them to resolve the issue.
Please refer to this Autodesk article for additional troubleshooting - "Users weren't added due to network problems" when inviting users
