Readynas duo v2 cant access on windows 11

lundjacob​ wrote: The IP Range in diffined as 192.168.0.2-192.168.0.250. 

You can't change the upper value w/o also changing the subnet mask.  But you can reset the range to 192.168.1.2-192.168.1.99, and then reconnect your devices to get IP addresses in the new range.  (Addresses over 100 will still work, but will not be assigned by the router - eliminating the chance of two devices trying to use the same address)

Your other path is to do an OS reinstall from the Duo's boot menu.  Instructions are on pages 15-16 here:

• https://www.readynas.com/download/documentation/HM/Duov1_NV+v1_HW_en_30Nov11.pdf

Be careful not to do a factory reset by mistake, as that will destroy your data.

The OS reinstall will

1. reset the NAS admin password to netgear1
2. reset the NAS IP address to use DHCP, so it will get an IP address from your router

It will not affect your data.

Once you have access, then look at your router web interface.  Almost all routers have a way to reserve an IP address for the NAS.  That is better than setting up a static IP address in the NAS web ui (as it avoids the problem you just ran into).