Change the Number of Simultaneous Connections
This setting specifies the maximum number of concurrent connections accepted.
Open your registry and find the key below.
Create a new string value named "MaxConnections" and set it to equal the number of connections, the default is 100.
Restart Windows for the change to take effect.
Settings:
System Key: [HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\MSTCP]
Name: MaxConnections
Type: REG_SZ (String Value)
Value: 32-bit Number