we have just tested v5 for our yearly benefit restaurant tomorrow. Half way our test we had to stop, because we lost our licence key. There is no internet available, so it was a lot of trouble getting connected again.
Was it an unfortunate error, or is v5 not designed to work offline?
Tomorrow we go live,… so please give some tips to avoid this tomorrow 
V5 license should not deactivate due to no internet connectivity but I’ve added some code to ensure it does not drop for V5.1.50 release. Are you using V5.1.50?
PS: It may deactivate due to restoring a backup if it was the case…
i am using v5.1.50, and we didn’t take a back-up. We couldn’t figure out what happened,… suddenly the message came that we where in trial mode. So what can happen if we ignore that? After x orders, it stops working?
No it won’t stop working but will display a disturbing popup while adding orders.
It shouldn’t suddenly switch to trial mode. We don’t require such validation.
Do you mean the red trial badge appeared on title or a message box showed saying “no valid license found”?
the red trial badge appeared.
so from that moment one, we have 500 order to go
No not from that moment. It checks all tickets.
Do you occasionally connect to internet or does it have no internet connection at all?
we don’t have an internet connect there, but someone connected via GSM
Did you activate it when you bought license?
yeah sure, it worked fine 
lets hope it’s not a problem tomorrow on our benefit
thanks for the quick response
I wondered something. Did it just suddenly appeared in the middle of operation or did it appeared after you restarted sambapos?
If it helps Emre I have had that happen to me once when I had to force it shutdown when I messed up a script. I forced it shut and deleted the script in MSSMS when I started it again it had lost license. But mine had the popup
I didn’t think much of it because I just cleared keys.
Popup message does not relates with license activation. It happens if SambaPOS can’t load license module. @QMcKay also saw that once but that will probably won’t happen by 5.1.50. Please let me know if you see that popup that again 
Only other time I saw the error he described is when changing databases or loading a backup.
Yes it is perfectly normal as backup may not contain valid licenses.
We didn’t have a problem working offline yesterday, so iT was a one time issue
We only had some problems staying connected… The Message server didn’t refresh the screens all the time, but the system worked fine.
Thanks for all the support here