>Thanks for replying. Yes I have set exclusive on, and it is set for private datasessions. My isexclusive returns it as .f. Here is the code I am running in a timer that fires periodically. If my table is get exclusive lock then I start another timer.
>
>local xx, yy, bb, worked, isa
>xx = 1
>yy = 2
>with thisform
>Worked = .t.
>cErrHandler = ON('ERROR')
>ON ERROR Worked = .f.
>set exclusive on
>USE xtable exclusive
>
>isa = isexclusive("xtable",1)
>cMessageTitle = 'My Application'
>nDialogType = 0
>
>DO CASE
> CASE isa = .t.
> cMessageText = 'locked'
> wait window alltrim(cMessageText) timeout 0.5
> CASE isa = .f.
> cMessageText = 'no lock'
> wait window alltrim(cMessageText) timeout 0.5
>
> ENDCASE
>
>
> ON ERROR &cErrHandler
> IF Worked
> bb = '(((((( FILE EXCLUSIVE ))))))'
> wait window alltrim(bb) timeout 0.9
> .T1.enabled = .t. && start timer1
> ELSE
> bb = 'oooooo File Not Free ooooooo'
> wait window alltrim(bb) timeout 0.9
> ENDIF
> if .t2sw = .f.
> .T2.interval = 25000 && set new timer interval
> .t2sw = .t.
> endif
>endwith
>
>
>It should lock, could it be that this is in a timer and I keep issuing use tablex exclusive periodically when the timer fires?

PMFJI But I thought the ISEXCLUSIVE was only detecting if you had the file opened exclusively on the current machine.