Impossible to reconnect VRDP after disconnection

[Ravinou]

Hi, we are using VRDP on virtualbox 5.1.10 on Debian Wheezy. Virtual Machine is a Windows XP.

5.1.10-112026~Debian~wheezy

VBox ExtPack is install too.

My problem with vrdp occurs when there is a network disconnection or if the PC that connects to VRDP is disconnected suddenly without properly closing the RDP connection.

00:14:22.877226 VRDP: Connection opened (IPv4): 15
00:14:22.877825 VRDP: Negotiating security method with the client.
00:14:22.891875 VRDP: Methods 0x0000001b
00:14:22.891913 VRDP: Channel: [rdpdr] [1004]. Accepted.
00:14:22.891929 VRDP: Channel: [rdpsnd] [1005]. Accepted.
00:14:22.891942 VRDP: Channel: [drdynvc] [1006]. Accepted.
00:14:22.891974 VRDP: Channel: [cliprdr] [1007]. Accepted.
00:14:22.966644 VRDP: Client seems to be MSFT.
00:14:22.966680 VRDP: Logon: VM-W7-PC (11.46.49.32) build 7601. User: [] Domain: [] Screen: 0
00:14:22.967984 AUTH: User: []. Domain: []. Authentication type: [Null]
00:14:22.968014 AUTH: Access granted.
00:14:22.968756 AUTH: Multiple connections are not enabled. Access denied.
00:14:22.968779 VRDP: Connection closed: 15
00:14:35.670630 VRDP: New connection: 
00:14:35.670763 VRDP: Connection opened (IPv4): 16
00:14:35.671358 VRDP: Negotiating security method with the client.
00:14:35.672871 VRDP: Connection closed: 16
00:14:35.705151 VRDP: New connection: 
00:14:35.705210 VRDP: Connection opened (IPv4): 17
00:14:35.705832 VRDP: Negotiating security method with the client.
00:14:35.723321 VRDP: Methods 0x0000001b
00:14:35.723383 VRDP: Channel: [rdpdr] [1004]. Accepted.
00:14:35.723398 VRDP: Channel: [rdpsnd] [1005]. Accepted.
00:14:35.723412 VRDP: Channel: [drdynvc] [1006]. Accepted.
00:14:35.723425 VRDP: Channel: [cliprdr] [1007]. Accepted.
00:14:35.783553 VRDP: Client seems to be MSFT.
00:14:35.783592 VRDP: Logon: VM-W7-PC (11.46.49.32) build 7601. User: [] Domain: [] Screen: 0
00:14:35.784755 AUTH: User: []. Domain: []. Authentication type: [Null]
00:14:35.784785 AUTH: Access granted.
00:14:35.785588 AUTH: Multiple connections are not enabled. Access denied.
00:14:35.785618 VRDP: Connection closed: 17
00:16:08.662647 VRDP: New connection: 
00:16:08.662747 VRDP: Connection opened (IPv4): 18
00:16:08.663370 VRDP: Negotiating security method with the client.
00:16:08.664983 VRDP: Connection closed: 18
00:16:08.689273 VRDP: New connection: 
00:16:08.689333 VRDP: Connection opened (IPv4): 19
00:16:08.689886 VRDP: Negotiating security method with the client.
00:16:08.719393 VRDP: Methods 0x0000001b
00:16:08.719401 VRDP: Channel: [rdpdr] [1004]. Accepted.
00:16:08.719404 VRDP: Channel: [rdpsnd] [1005]. Accepted.
00:16:08.719407 VRDP: Channel: [drdynvc] [1006]. Accepted.
00:16:08.719410 VRDP: Channel: [cliprdr] [1007]. Accepted.
00:16:08.789932 VRDP: Client seems to be MSFT.
00:16:08.789994 VRDP: Logon: VM-W7-PC (11.46.49.32) build 7601. User: [] Domain: [] Screen: 0
00:16:08.791341 AUTH: User: []. Domain: []. Authentication type: [Null]
00:16:08.791372 AUTH: Access granted.
00:16:08.792399 AUTH: Multiple connections are not enabled. Access denied.
00:16:08.792434 VRDP: Connection closed: 19
00:19:15.028325 VRDP: New connection: 
00:19:15.028558 VRDP: Connection opened (IPv4): 20
00:19:15.029174 VRDP: Negotiating security method with the client.
00:19:15.030794 VRDP: Connection closed: 20
00:19:15.073957 VRDP: New connection: 
00:19:15.074088 VRDP: Connection opened (IPv4): 21
00:19:15.074707 VRDP: Negotiating security method with the client.
00:19:15.091989 VRDP: Methods 0x0000001b
00:19:15.092058 VRDP: Channel: [rdpdr] [1004]. Accepted.
00:19:15.092076 VRDP: Channel: [rdpsnd] [1005]. Accepted.
00:19:15.092091 VRDP: Channel: [drdynvc] [1006]. Accepted.
00:19:15.092107 VRDP: Channel: [cliprdr] [1007]. Accepted.
00:19:15.219874 VRDP: Client seems to be MSFT.
00:19:15.219935 VRDP: Logon: VM-W7-PC (11.46.49.32) build 7601. User: [] Domain: [] Screen: 0
00:19:15.220837 AUTH: User: []. Domain: []. Authentication type: [Null]
00:19:15.221122 AUTH: Access granted.
00:19:15.221791 AUTH: Multiple connections are not enabled. Access denied.
00:19:15.221815 VRDP: Connection closed: 21

Similars problems are already evoke in many tickets like #4655.

Just disconnect your RJ45 cable, on your server or on the PC who RDP WHEN RDP is connected and you will not can connect you again. For reconnect you will have to reboot VM or disable/enable VRDP.