Hi All, We have a customer who is running a Windows server environment with Active Directory, they also use a Mikrotik and run PPTP VPN to connect into their office. They are having issues with authentication on the Windows PC's when accessing the shares on the server and wondering if anybody has any suggestions on how to make this work. I recall some time ago that there were issues if the cached credentials on the PC's weren't updated regularly, and I have also wondered if using Windows IAS for the VPN Authentication may help but the customer is looking to us for help and I haven't really done this sort of thing for a while and was hoping that somebody could point me in the right direction for a solution which would work for them and not cause them to have to re-auth when accessing those resources on the server. Thanks Paul