Your network contains two Active Directory forests named contoso.com and nwtraders.com. A two-way forest trust exists between contoso.com and nwtraders.com. The forest trust is configured to use selective authentication.
Contoso.com contains a server named Server1. Server1 contains a shared folder named Marketing. Nwtraders.com contains a global group named G_Marketing. The Change share permission and the Modify NTFS permissions for the Marketing folder are assignes to the G_Marketing group.
Members of G_Marketing report that they cannot accesss the Marketing folder.
You need to ensure that the G_Marketing members can accesss the folder from the network.
What should you do()