Go to the registry key:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Look for the following values:
MaxConnectionsPerServer
MaxConnectionsPer1_0Server
If they don't exist, create them as DWORD values.
Set these values to the number of simultaneous connections you want to allow. A good value is 50
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Look for the following values:
MaxConnectionsPerServer
MaxConnectionsPer1_0Server
If they don't exist, create them as DWORD values.
Set these values to the number of simultaneous connections you want to allow. A good value is 50