M4300-12X12F (XSM4324S) needs reboot to access admin interface

Hello everyone

Thanks all for all the answers. 

The update of the switches did not solve the problem. 

I think however there has been some confusion. That's most likely my fault, not explaining thourogh enough

The switches does not reboot when we access the admin interface. We need to reboot the switches to be able to access it. And that goes for SSH aswell. Whenever the problem manifests itself, we cannot access it to administer it, regardless of what method we use

The switch does what it is supposed to do still, it handles the traffic, and everyone has a connection. But since we can't access it, we can't administer it, do backups via NMS300, or do any monitoring via NMS300, since NMS300 sees the switch, erroneously, as down. So it seems like it stops accepting traffic on the management VLAN, or something. We have configured NMS300 with access to HTTPS, SSH and SNMP. 

As i said, we only see it on our M430012X12F, we have 3, all three behaves the same.    All other Netgearswitches in the the network(several S3300, and a couple older ones) does not behave like this. 

So it does not feel like it should be a hardware issue, since it manifests on all 3, and have done so since the beginning. The switches is bought a couple of months apart.

I've been looking for a way to send a case to Netgear, but we have no support agreements or anything like that, and the 90 day complementary support has passed on all 3. So I can only see hardware to be a viable option for support, but since this does not feel like hardware issues that feels incorrect. (plus, we can't really send the switches away since we have nothing to replace them with right now). 

Sorry for the text being long and rambling, just trying to be as clear as possible. 

If anyone has any ideas or other things we can try with, it is highly appreciated. 

Regards

Stoffe Eriksson