kb.mihelj.net
Petja's technical blog

http://www.itacs.de/services/ChangePwEn.aspx – if Sharepoint users are in Active directory
http://www.itacs.de/services/ChangeLocalPwEn.aspx – if users are not in Active directory
Tested on Sharepoint services 2.0 and Sharepoint services 3.0 (installed with stadm – see readme.txt)

Please follow these steps:

From the Start button, type REGEDIT into the Search box, then press Enter to launch the Registry Editor (regedit.exe).

Note: If you did not disable UAC (read my “Disable User Account Control in Windows Vista ” article) then you will be prompted to consent to the action you’re about to perform. Click Continue.

Locate the following key in the registry:

HKEY_CURRENT_USER\Software\Microsoft\Windows\DWM

Modify the following value (REG_DWORD):
Composition
Change the existing value to 1.
Modify the following value (REG_DWORD):
CompositionPolicy
Change the existing value to 2.

Close Registry Editor.

Open an elevated Command Prompt window. To open an elevated Command Prompt, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator. You can also type CMD in the search box of the Start menu, and when you see the Command Prompt icon click on it to select it, hold CTRL+SHIFT and press ENTER.

In the Command Prompt window, type

net stop uxsms

press Enter.

Wait for the Desktop Window Manager Session Manager service to stop, then type in

net start uxsms

press Enter.

Wait for the Desktop Window Manager Session Manager service to start.
You *might* need to restart your computer.

Microsoft KB935400 blames the cause of the Outlook 2007 slowness to network hardware device, such as a router, that does not support TCP Window Scaling. However, the problem does not exist in Windows XP, thus the problem is probably more due to poor implementation of TCP Windows Scaling feature, or at least due to this feature that does not provide backward compatibility with older network equipments.

To solve the problem, simply disable the Vista AutoTuning function which is the most common suggestion and fix for various network problems in Vista.

Here’s the step to disable TCP Window Scaling Auto Turning feature:

Click Start button, click All Programs, and then click Accessories.
Right-click Command Prompt, and then click Run as Administrator.
If you are prompted for an administrator password or for confirmation, type the password, or click Continue.

At the command prompt, type the following command, and then press ENTER:

netsh interface tcp set global autotuninglevel=disabled

Try to download the emails with Outlook 2007 again. The slow downloading problem should have resolved. Microsoft also suggest users to isolate the hardware that does not support TCP Window Scaling, replace the hardware and re-enable the autoTuningLevel parameter.

To work around this issue you might consider changing the Windows Scaling factor to 2. To change the Windows Scaling factor to 2, follow these steps:

1. Click Start and type CMD.
2. Press CTRL+SHIFT+ENTER to open the command Prompt with Administrative rights.
3. At the prompt in the Administrator: Command Prompt window, type the following command, and then press ENTER:

netsh interface tcp set global autotuninglevel=highlyrestricted

This will set the autotuninglevel to “Allow the receive window to grow beyond its default value, but do so very conservatively”.
To read more about the netsh command in Windows Vista please use Vista’s help and support tool. You will need to reboot in order for the setting to take effect.
You can easily restore the setting back to the default by typing:

netsh interface tcp set global autotuninglevel=normal

Remember to reboot in order for the setting to take effect.

You can also disable autotuning with the following command:

netsh int tcp set global autotuninglevel=disable

Reboot your system.

Exchange 2003 and Sharepoint services on same server? Problems? Check this out …
http://support.microsoft.com/?kbid=823265