Suddenly can't write to any network storage (TrueNAS/Seagate Personal Cloud/Offsite)

Hey everyone,

Just discovered I’m having trouble moving/pasting files to any of my various network storage, seemingly out of the blue. Last night I tried to copy some files from my desktop (Linux) to an SMB share on TrueNAS. No matter what folder I tried to paste to, I would get an error in Dolphin, “Access denied. Could not write to smb://user@truenas.local/Media”.

I can access and read everything as normal. Only pasting/moving throws that error. However, I’m still able to save files to this share through my browser and other applications.

Through more testing I also found that I can’t paste anything to other completely unrelated storage devices. I tried moving a file onto my old Seagate Personal Cloud (via SMB) and got the same access denied error. I also tried to paste something to my offsite TrueNAS machine and still no joy.

At first I thought it had something to do with my Syncthing setup, but the Seagate is totally untouched by anything I’m doing with the rest of the servers so I don’t think it’s that. I would imagine that also rules out a permissions problem in TrueNAS. I have changed nothing in my setup between now and the last time I remember copying a file over SMB.

I also tried to move a file from my laptop (also Linux) to the offsite NAS while I was at work and ran into the same issues.

This (and a bit of research) all leads me to believe that something is/has gone wonky with how I access the shares in Linux. My best guess right now is that I don’t have them properly mounted as drives in fstab. I’m just accessing them from the “Remote” section of the sidebar in Dolphin as discovered devices.

Am I on to something with this hunch or am I way off?

Have you found anything on this. I too cannot copy stuff to my nas. I’m running bazzite, and server is hexos/truenas scale. I can move stuff to it on my windows 11 laptop and my phone using tailscale.

Turns out this is an issue with KDE. There should be a patch out there that is either coming soon, or is already ready for download. Being on bazzite, I don’t seem to have the update yet. So OP see if you can update KDE to 6.19.1.

Credit goes to gsstratton on discourse bazzite forum

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Hey Kryss, thank you for sharing that! I’m on Cachyos w/ KDE so that would certainly explain it if that’s the cause.

Currently out of town for the week but will see what the updates bring when I get home.

I’ll keep you updated!

No problem. Someone on the bazzite forums told me about it when i was asking questions and this problem was one. Hope it does work for you. Currently waiting for it to clear fedora QC so bazzite can push us an update.

Good news!

Just got home and got my system updated and it seems to be working as expected now. Seems the KDE patch fixed the issue.

Hope it will get pushed to you soon and will also fix your issue!

Fedora KDE here, haven’t fixed yet ;/

Looks like it’s expected to be fixed in KDE Frameworks 6.20, comes November 14, 2025. Not that soon huh…