NAS not Visible

[gnomus]

MinimServer is working well on all my devices and I feel I am being a little impertinent posting this issue here. But I simply cannot find a solution elsewhere. Maybe someone has suffered and has fixed my problem and so....

I have 3 x NAS drives connected to my Win 10 PC - 2 x Synology and 1 x QNAP. Minimserver is installed on each device. Minimserver works on each device. I can access each device via my web browser.

So what is wrong? Well I do not see any of my NASs appearing as a computer in Win 10 file browser. And this leads to problems because when I discover tagging errors, MP3Tag is unable to get to any of my music.

I used to be able to see these NASs. From time to time they would disappear off the network, but they would usually come back after a reboot. However, they have been gone now for ~2 weeks. I should add that other computers/laptops cannot see them either.

Again, I do apologise for posting as it is not really a MinimServer issue - but has anyone seen and been able to fix something like this?

A screenshot of my Network folder: