Windows Vista Slow Network Problems

Maybe you have already encountered the strange behaviour that it takes much longer to copy large files in Windows Vista than in Windows XP. You thought that the change from XP to Vista would at least be not a disadvantage speed wise but Vista somehow seems to have a problem copying large files. This happens especially with mapped drives but it could also be that you witness network disconnects.

The problem is caused by a new feature called Auto Tuning which is by default enabled in Microsoft Windows Vista. What Auto Tuning does is that it reacts on changes in the network by tuning the receive windows size. The solution would be of course to disable Auto Tuning in Vista. Some users reported that disabling Auto Tuning had a positive effect on their ability to connect to services such as Windows Live Messenger which did not work before.

To disable Auto Tuning and speed up the copy process and avoid timeouts and disconnects do the following:

Open a command prompt and type the following: netsh int tcp set global autotuninglevel=disabled

once you receive the ok, restart to activate and you should notice a difference.

if for any strange reason you would like to re-activate it use the code below.

To turn it on again: netsh int tcp set global autotuninglevel=normal

How to check the license status for Windows Vista

License status show whether the windows vista client is activated (“licensed”) in the grace period or unlicensed. If the status displays “unlicensed” the windows vista client cannot be logged onto until activated.

To determine license status

1.       Launch a command window with the elevated privlidges (right-click, run as administrator).

2.       Specify KMS by running the following script: cscript %windir%\system32\slmgr.vbs -dli

Run the command prompt in administrator mode by using the browser to navigate to your windows \system32 directory, and then right-click the CMD.exe file and select “run as administrator”

How to activate Windows Vista

If the PC will be used for more than 90 days without activation and then be registered follow instructions below:

1.       Launch a command prompt window with elevated privileges (right-click, run as administrator).

2.       Run the following script, using your product key: cscript %windir%\system32\slmgr.vbs -ipk xxxxx-xxxxx- xxxxx- xxxxx- xxxxx

Run the command prompt in administrator mode by using the browser to navigate to your windows \system32 directory, and then right-click the CMD.exe file and select “run as administrator”

How to reset activation on Windows Vista

The following activation timer reset process can be run a maximum of three (3) times. Each time it is run, the number of available resets is decremented. Most windows vista machines typically allow two (2) resets as most machines are built with an image that utilizes “sysprep/generalize” to create distribution media.

Resetting activation

1.       Launch a command window with elevated privileges (right-click, run as administrator).

2.       Reset the activation timer by running the script: cscript %windir%\system32\slmgr.vbs -rearm

Run the command prompt in administrator mode by using the browser to navigate to your windows \system32 directory, and then right-click the CMD.exe file and select “run as administrator”