>Thank you Thomas.
>
>>>>
>>>>If there are some clients with Vista or W7 they might connect via SMB2 which can destroy an index on file server OS > 2003
>>>
>>>Did this issue just apply to VFP 9, or also prior versions like VFP 8 and 7?
>>
>>To all ISAM-file based database tools: Access, dBase, Foxpro, Vfp and others as well. It's an OS bug biting the ISAM.

You a re welcome. Note: With *only* Win8 on server *and* client the issue has been reported as fixed via SMB3, but unsure what happens when Vista meets W8...