Officially, the incomplete half-open outbound TCP connection attempts allowed at any one time is now unlimited by default in Windows Server 2008 and Vista SP2 (Service Pack 2), and Windows 7. Actually, the ability to limit or restrict number of half-open outgoing TCP connections system can create or establish is built into Windows Vista SP2 and Windows 7, however it’s disabled by default.
Disable and Remove Half-Open TCP Connections Limit (to Unlimited) in Windows 7 and Vista SP2 with EnableConnectionRateLimitin Registry KeyThus, in most circumstance, no more Event ID 4226 in Windows Vista SP2 or Windows 7 (note: Windows Server always doesn’t have half-open TCP connections limit). No patch of any kind is required, for kernel memory or tcpip.sys file. In the event that you want to doubly confirm that the half-open TCP connections limit is indeed been removed, or system administrator has placed a limit restriction on half-open incomplete TCP connections, it’s possible to configure or use EnableConnectionRateLimiting registry key to disable and remove the half-open TCP connections limit.
How to Disable Half-Open TCP Connections Limit in Windows Vista with SP2 or Windows 7
1. Click Start button.
2. Type regedit in the Start Search box, and then click regedit.exe in the Programs list.
3. If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
4. Navigate to the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Tcpip\Parameters\
5. In the right pane, locate EnableConnectionRateLimiting registry value data entry.
6. If "EnableConnectionRateLimiting" is not found, the half-open TCP connections limit is already removed/disabled, allowing unlimited half-open incomplete outbound connections.
If "EnableConnectionRateLimiting" is found, delete the registry entry away, or double click on EnableConnectionRateLimiting, and in the Value data box, type 0, and then click OK.
Note: If you want to have the registry key to exist, create a new DWORD (32-bit) Value named as EnableConnectionRateLimiting, and set it to 0 to continue disable and bypass the limit check.
7. Exit Registry Editor.
8. Restart the computer (in fact, the change takes effect immediately without the need to reboot).
The registry key hack to disable half-open TCP connections limit works on all 32-bit (x86) and 64-bit (x64) edition of Windows Vista with SP2 and Windows Server 2008 with SP2, and unofficially, Windows 7.
1. Shuffling Through Program Windows. If you’re running a number of files from the same program, such as multiple documents in Microsoft Word,Windows 7 allows you to switch through these windows with ease.Simply press down on the Ctrl key while clicking the icon from the taskbar.Each click will change the window to the next in the sequence, in the order that you opened them.
2. Managing Your Windows. Windows 7 simplifies document and program management by allowing you to “dock” a window or manipulate its size with one mouse maneuver or a simple keystroke. To dock your window on one half of the screen, drag it to the left or right and it will change its size to fit that half of the screen. To manipulate the vertical size of a window, drag the window to the top to maximize it, or double-click the window’s top or bottom border to maximize it vertically while keeping the same width.You can also perform all of these functions with keystrokes: +Left Arrow and +Right Arrow dock to half the screen +Up Arrow and + Down Arrow maximize and minimize +Shift+Up Arrow and +Shift+Down Arrow maximize
3. Project Your Display With Ease. Plugging in a projector and projecting your displayis a snap with the Windows 7 driver display utility, displayswitch.exe. Simply hit+P to display the following easy-to-navigate pop-up window:By hitting your arrow keys (or +P) you can switch through multiple displaysettings, such as “clone”, “extend” or “external only.”
4. Multi-Monitor Window Management. Windows 7 makes usingmultiple monitors as convenient as it should be. When you’re workingin multi-monitors, use the keyboard shortcuts +Shift+Left Arrow and+Shift+Right Arrow to toggle between monitors. The new windowwill keep its relative position to the top-left origin of the original.
5. Live Clutter-Free. We live with enough clutter in our lives. Windows 7 gets ridof all the superfluous windows behind your active window. Just hit +Home tominimize all inactive windows. To restore the windows when you’d like them, justpress +Home again.
6. Order and Reason for Your Taskbar. You can decide the order thatyour icons show up in your taskbar by simply dragging them to theorder you desire. And for the first five icons, you can launch them with a simple keystroke: Any of the first five icons can be opened by pressing START+1, +2, etc.
7. Taskbar Traversing. While we’re on the subject of taskbar shortcuts, use +T toshift your attention to the taskbar. Your machine will make its active screen your taskbar menu, and you can use the arrow keys to select the application you’re interested in. Just hit Enter to launch it. Naturally, to exit this trick, press Esc.
8. Change the Scenery. Windows 7 allows you to personalize your desktop background to suit your many moods with a new shuffle feature for your desktop. You can program your desktop background to shuffle through your favorite images and get a change of scenery as often as you like. To enable the shuffle feature, rightclick on your Desktop and select “Personalize,” then “Desktop Background.” Choose the folder where your favorite images or photos are stored and select as many as you like. Make sure you check the “Shuffle” box, and choose how often you’d like your images to shuffle. It’s a simple way to keep your desktop looking fresh and fun.
9. Crunch The Numbers. The new Windows 7 calculator is a number cruncher’s dream.
New functionality allows the user to not only calculate in the Standard and Scientific
modes, but also in Programmer and Statistics modes. And that’s not all! Ever need
conversion formulas for temperature, weight, area, or time? Finding the unit
conversion option makes it a snap and takes all the work out of the user’s hands.
There are even templates for gas mileage, lease estimations, and mortgage
estimations.
10. Smart Printing. Windows 7 allows for several default printers in several locations. Your computer will choose the correct printer for where you are. No need to reset your default or remember what the printer name is; Windows 7 will figure out whether you’re at home or at work with Location Aware Printing.
11. Shake It Up. Remember the Etch-a-Sketch where you would shake it to make things disappear? Windows 7 uses the same shake concept to help you manage your windows. Windows 7 Aero®Shake allows you to clear the inactive windows from your desktop by “shaking” over the window you’re working. Hover your mouse over the title bar of your active window, left-click and shake from side to side, and all your inactive windows will
disappear. To bring them back, repeat the procedure and shake everything back into
view.
12. Clean Your Desktop! And Order It Too. You’ve always been able to auto-arrange your desktop icons by right-clicking on the desktop and choosing “Sort By.” Now Windows 7 makes it even easier. To auto-arrange the desktop icons according to your default settings, simply press and hold F5. Order is instantly accomplished.
13. Right-Click Mania. In Windows 7, right-clicking may just be your secret friend. There are many ways the right-click can simplify your computing experience. Here are just a few:
a. Right-click any empty spot in your desktop, and you have the control to change the screen resolution.
b. Right-click any of the icons in the Taskbar to “Unpin this program from the Taskbar.”
c. Last but not least, right-click the Taskbar Explorer icon to access your most frequently used folders.