I'm using a PPTP VPN built into my computer (router B) to connect to a remote router (router A). Then, I use Windows File Explorer to copy files from router A's SMB network drive to my computer. The connection drops after a few seconds, and checking router A's management interface reveals it has automatically restarted.

This problem has existed since I bought the router, so I've had to use other VPN connection methods.

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Operating Environment:
Internet --- Modem --- Router A (PPTP server)
Internet --- Modem --- Router B --- PC (Client)

Router A: Remote
TP-Link BE230
(1.2.3 Build 20260108)
IP Address: 192.168.2.1
PPPoE
(Chunghwa Telecom Fixed IP XXXXXXXX @ ip*hinet*net)
MTU Size: 1480
IP Address: Dynamically obtained from ISP
DNS Address: Dynamically obtained from ISP
Primary DNS: 168.95.192.1
Secondary DNS: 168.95.1.1
Connection Mode: Automatic

VPN Server Settings
PPTP: VPN enabled
Client IP Address: 10.0.0.11-10.0.0.20
V Allow SMB (Network Neighbor) access
V Allow NetBIOS tunneling
V Allow unencrypted connections

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B Router: Local use
TP-Link BE230
(1.2.1 Build 20250804)
IP Address: 192.168.0.1

PPPoE
(Chunghwa Telecom Dynamic IP XXXXXXXX @ hinet*net)
MTU Size: 1480
IP Address: Dynamically obtained from ISP
DNS Address: Use the following DNS addresses
Primary DNS: 1.1.1.1
Secondary DNS: 1.1.1.1
Connection Mode: Automatic

User Equipment
Intel NUC8I7BEH
Windows 11 HOME 25H2
Network Card: Intel I219-V Windows Built-in VPN Connection
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