>>>If there are some clients with Vista or W7 they might connect via SMB2 which can destroy an index on file server OS > 2003
>>
>>Yes, there are probably those and Windows XP clients also.
>>How to fix this ?
>
>Regstry changes server and client. Beware: sometimes Windows update resets those settings to values you don't want.

Where to find info what settings should exactly changed ? I found links below but it looks like this cannot disabled.

http://fox.wikis.com/wc.dll?Wiki~VisualFoxProOnWindowsServer2008
http://www.caseware.com/support/caseknowledge/file-corruption-when-using-windows-vista-windows

[http://social.msdn.microsoft.com/forums/en-US/windowsgeneraldevelopmentissues/thread/2cd6a10e-f39f-451f-80ae-7f6b4a7c150d/]
[http://social.msdn.microsoft.com/forums/en-US/windowsgeneraldevelopmentissues/thread/e2cd9835-6f02-4c03-afaf-6060a2e91ee1/]
http://www.petri.co.il/how-to-disable-smb-2-on-windows-vista-or-server-2008.htm
http://blogs.technet.com/askperf/archive/2008/05/30/two-minute-drill-overview-of-smb-2-0.aspx


[http://social.msdn.microsoft.com/Forums/en-US/visualfoxprogeneral/thread/82dd5a8a-69d3-435e-8dba

UT thread #1430067 Message #1435304