FIX: Server is Not Accessible. You might not have permission to use this network resource. The handle is invalid. (Solved) • Repair Windows™
How to Fix You Don't Currently Have Permission to Access This Folder Issue - EaseUS
You might not have permission to use this network. Contact the administrator of this server to find out if you have access permissions | Qnap Advanced Support
Fix: You Don't Currently Have Permission To Access This Folder In Windows 10