Shared folder with a group not updating with new user

[Ramon_Lozano]

Hi, 

I have a structure of shared drive shared not with users but with group "teachers". All existing users on the group "teachers" before sharing for the first time can view and access to the shared folders.

The problem comes when I add a new user to the group. This user cannot see the shared folder even he belongs to the "teachers" group that has access.

How can I refresh? update? or solve this?

Thanks in advance!