I am having issues with shared folder permissions. Here is the scenario:
1. User1 shares folder to internal user
2. User2 accepts the share
3. User2 attempts to open document in shared folder
4. An Authentication window pops up to login.

Now, User2 is already logged in. Why is user2 prompted to login at this time? This only happens with some users and therefore leads me to believe is is a permissions issue for the user. Any assistance would be greatly appreciated.