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Vista - Fix Large File Copy and Network Disconnects

 
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PostPosted: Thu Apr 05, 2007 5:10 am    Post subject: Vista - Fix Large File Copy and Network Disconnects Reply with quote

Enter the following into the command window:

Code:

netsh int tcp set global autotuninglevel=disabled


REBOOT!

Once you have rebooted, you need to open a command prompt again with Administrative Privileges (see above if you need instructions on how to do this).

Once you have the command prompt open, we need to check and make sure we have disabled Receive Window Auto-Tuning by running the following command:

Code:
netsh int tcp show global


You should see, under Receive Window Auto-Tuning Level - Disabled. (don't worry if yours doesn't look identical to mine. I have been tinkering with other settings a bit).

Test out your network, messenger, and other file copy functions and see if this doesn't solve some issues.

Of course you can turn the Auto-Tuning feature back on at anytime (you will have to reboot).

If you would like to turn the feature back-on, simply enter the following:

Code:
netsh int tcp set global autotuninglevel=normal


Reboot, open a command prompt as Administrator, type: netsh int tcp show global - and make sure the Auto-Tuning Level is set to enabled.

Now Microsoft has also issued a "Hotfix" dealing with problems similar to what I have described above, but you must call MS in order to get it:
- MS Page and Hotfix Info.

http://support.microsoft.com/default.aspx/kb/931770
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