DNS issue? Windows refuse to go to new NAS

Networking & Firewalls
1

Hi all

At a bit of a lost on this one.

Have a old Netgear NAS that failed, changed the hostname and ip to something temporary. Fired up the spare True NAS, configured it with the old Netgear hostname and old Netgear IP.

Some PCs (win7-win10) saw the Truenas without a hitch.

However some others (win7-win11), will only connect to Truenas via IP. Cannot use the hostname on these machines. Cannot ping the hostname and cannot access with the hostname via File Explorer.

Restarted PC, flushdns, registerdns. No luck.

Nslookup, shows correct address to the NAS

DNS Server IP shows correct address.

Edit windows host file. Works. But once removed, it no longer works.

Other PCs that had worked without a hitch, had same network configurations. Empty host file. Shares the same DNS server settings and gateway.

Almost felt like some where in windows, its managed to find the new IP address of the old NAS and locked with the original hostname and its refusing to let it go…

Thinking if I shutdown the old Netgear, windows may decide to let go. But, it didnt, once the old Netgear is shut off, window just say it cannot find host.

Any thoughts?

2

Are these shares mounted with a script or just browsed by the user?

Just wondering if you need to force unmount them, then mount them again.

3

Started with the mounted drives. Tried manually user un-mount and re-mounting. No luck. Hostname not recognised.

Did a restart after the unmount. Mount didnt come back, so I presume it was unmounted successfully. Unforunately hostname remained the same…unrecognised.

4

Are you using the hostname or FQDN? Have you tried using the FQDN, assuming there is a domain to append? If not, have you tried adding a ‘.’ to the name (eg. “mynas.”)?