Vista Registry Tweak – Increase the Number of Simultaneous Downloads

Registry Tweak to Increase the Number of Simultaneous Downloads

Have you noticed a problem if you try to download more than two files at once from the internet?  The default number of simultaneous downloads from a web server is only 2.  By tweaking the registry you can increase the number to 10.

Topics for MaxConnectionsPerServer


Instructions for Increasing the Number of Simultaneous Downloads

  1. Launch Regedit (See more details on starting regedit)
    Navigate to this key:
  2. HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings
  3. Create a new DWORD called MaxConnectionsPerServer
  4. Set the value for DWORD = 000000a
  5. Create another new DWORD called MaxConnectionsPer1_0Server
  6. Also set the value of this DWORD = 0000000a

Note 1:  Check Internet Settings (Not Internet Explorer)

Note 2:  Hex 0000000a = Decimal 10

Key Learning Points

MaxConnectionsPerServer is a property of Internet Explorer, rather than of Vista.  Default values simultaneous downloads have increased in later version of IE, thus in IE 7 the default is 2, whereas IE it’s 6.

  • Do you find the MaxConnectionsPerServervalue in HKCU** or HKLM? 
    Answer: HKCU
  • Should you add a value, or modify an existing setting? 
    Answer: Create a new dword set the value = 0000000a
  • Is MaxConnectionsPerServer a String Value or a DWORD? 
    Answer: DWORD.
  • Do you need to Restart, or merely Log Off / On? 
    Answer: As it’s a HKCU, just logoff and logon.
  • Tip: Add this Value, MaxConnectionsPerServer to Regedit’s Favorites menu
  • This maximum number of connections applies to any connection to a web server, not just to downloads.
  • This limit of two connections is set by the HTTP 1.1 specification (RFC2068) rather than Microsoft.

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Screen Shot of Internet Settings

Increase Simultaneous Downloads MaxConnectionsPerServer - Network Configuration

Creating a .Reg File

This page explains how to create, and then edit .reg files for your computer.  As it’s easy to import the contents of a .reg file into the registry, do take extra care with procedures.  Example MaxConnectionsPerServer  .reg file.


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Configuring Windows Vista Topics:


     Vista Tools and Extras