[SMB] No authentication prompt when accessing share using 'user@host/folder'

That’s quite explicit, dolphin can’t access your network by default, because bazzite runs dolphin in flatpak and flatpak is all about adding restrictions to applications to improve security.

You might loosen the restriction for dolphin to access the network using flatpak configuration for apps.

Fixing this in kio-extras (where the thumbnail is done) / dolphin is possible, but takes a lot of effort, using portals. Help welcome.

Try to install flatseal (flatpak install flatseal).
Flatseal manages permissions for apps installed via flatpak.

Dolphin is not installed on bazzite through flatpak, it’s a system package:

$ flatpak info org.kde.dolphin
error: org.kde.dolphin/*unspecified*/*unspecified* not installed

$ rpm -q dolphin
dolphin-26.04.0-1.fc44.x86_64

Is there anything else I can do to help narrow down the issue?

It is not a widespread problem. I use Fedora 44 KDE (just upgraded) and mine works fine accessing a NAS drive via SMB. Dolphin version 25.04.01. Password Manager pops up after a reboot or boot up when trying to access the NAS drive only once and pressing OK will give access to the Network Drive until the next reboot or power up.

Password Manager pops up […] when trying to access the NAS drive

That’s a thing? I’m using bitwarden and I always have to manually go to my manager.

What are you using if I may ask? Maybe I need to switch :grinning_face_with_smiling_eyes:

It is not a widespread problem.

I know I’m just one other person, but over the past 2 days I’ve spent too much time troubleshooting SMB in Dolphin. The solution that eventually worked for me was using the format “smb://user@XXX.XXX.XXX.XXX/” instead of the “smb://server-name/” format I had been using (with the same setup) for a long time. The issue came out of nowhere, too - no updates, no noticeable changes, no major events - IDK /shrug

That can’t be true, a KDE Framework update (KIO) or KDE Gear (kio-extras) must have cause the regression.

You’re right, I probably just don’t remember - but I have no idea what did it or how to find out lol. I’m just happy SMB has been working for me.