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TrueNAS Community
forums.truenas.com › truenas general
Unable to write files to SMB shares - TrueNAS General - TrueNAS Community Forums
April 3, 2024 - Hello, I recently updated to TrueNAS-13.0-U6.1 from 11.3-U5 (I know, long time, big upgrade) a few weeks ago. All seemed well. Then today, for the first time, I tried copying some files from my Windows box to a SMB share, and I am getting a permissions error no matter where I try to copy the file to or from.
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TrueNAS Community
truenas.com › forums › archives › general help › general
Cannot write into folder | TrueNAS Community
March 22, 2021 - I think you problem is the same with this one and the solution is in it https://www.truenas.com/community/threads/permissions-issue-cant-write-to-a-subfolder.41704/octordle .
Discussions

Help an idiot fix permissions
To do permissions wide open for ... Read, Write, Execute permissions for every single user in the list? Edit, I changed SMB Guest Account to 'root' because 'nobody' wasn't working any more so I have access to the files again, it's a bit iffy because sometimes Windows doesn't connect straight away but it's kinda working. Plex still doesn't have access though, I can see everything on the server but trying to play anything gives a Playback Error "please check ... More on truenas.com
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7
December 29, 2020
Identical user permissions but can't write with 1 user
Hey, I just setup a pool and dataset with 2 users for my production company. The two users have identical ace’s and permissions from what I can see. The issue user 1- can read, write, execute all files user 2- can read and copy but not write after mnt/company/… I fought with this for hours ... More on forums.truenas.com
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1
0
March 20, 2025
SMB users authenticate but don't get write permission
SCALE 25.04.1 using a 240GB sata SSD boot and a 480 GB sata SSD mirror named “apps” which hosts the system dataset. I’m testing/learning with datasets created under apps, e.g. apps/smbtest. My client is linux, openSUSE Tumbleweed. I can’t get write, numerous attempts all result in read-only. More on forums.truenas.com
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July 7, 2025
Am I just an idiot? Cannot get share permissions to work properly
I think you gotta apply permissions recursively in the ACL part More on reddit.com
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4
January 30, 2024
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TrueNAS Community
forums.truenas.com › truenas general
Windows cant write to share - TrueNAS General - TrueNAS Community Forums
December 30, 2024 - Hi! Im pretty new to Truenas, and im having issues writing files to a smb share. Ive been able to do this just fine before on a diffrent server, but having issues with this new one. Windows keeps saying i need permissions to perform this action, being moving a single audio file.
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TrueNAS Community
truenas.com › forums › archives › freenas (legacy software releases) › freenas help & support › general questions and help
SOLVED - Help an idiot fix permissions | TrueNAS Community
December 29, 2020 - To do permissions wide open for everyone like you've done do I just set Owner, Group, Other will full Read, Write, Execute permissions for every single user in the list? Edit, I changed SMB Guest Account to 'root' because 'nobody' wasn't working any more so I have access to the files again, it's a bit iffy because sometimes Windows doesn't connect straight away but it's kinda working. Plex still doesn't have access though, I can see everything on the server but trying to play anything gives a Playback Error "please check that the file exists and the necessary drive is mounted".
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TrueNAS Community
forums.truenas.com › truenas general
Identical user permissions but can't write with 1 user - TrueNAS General - TrueNAS Community Forums
March 20, 2025 - Hey, I just setup a pool and dataset with 2 users for my production company. The two users have identical ace’s and permissions from what I can see. The issue user 1- can read, write, execute all files user 2- can read and copy but not write after mnt/company/… I fought with this for hours today, even making new users, and remaking the smb share, both users are in a “group” in the filesystem ACL as well as smb acl".
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Reddit
reddit.com › r/truenas › am i just an idiot? cannot get share permissions to work properly
r/truenas on Reddit: Am I just an idiot? Cannot get share permissions to work properly
January 30, 2024 -

Vers: TrueNAS-SCALE-22.12.3.2

I'm really struggling to get smb shares to work properly. No matter what there's always something missing in the settings I pick. I either get access and can read/write, but cant view existing files, or I can see the files but can't create or edit, or I just get flat out denied access.

Is there an idiots guide to TrueNAS SMB shares? I've tried following a couple video guides, but they basically all do the same thing in the end and Im stuck with one of the scenarios listed above. I'm not even trying anything complicated.. I just want users associated with the group 'Games' to be able to read and write to the share. That's it.

Here's what I'm doing:

  1. Create a dataset called Games and all defaults and smb share type selected as so:

2) Create a smb share to the mount point (/mnt/data/games) with default share access/smb share access:

3) Create the FACLs as such:

3) Assign the users to that I want to have access to the share the group "games" that allows reading/writing/executing

However, when doing this I get access denied. I look at the file system and the permissions seem right.. For some reason whenever I touch a directory, it's creating a folder called 'sam' though too

sam@nas:~$ sudo ls -l /mnt/Data/
total 27
drwxrwx--x 3 root root  3 Jul 14  2023 Backup
drwxrwx--- 3 root root  3 Jan 27 14:17 Game
drwxrwx--x 5 root root  5 Jan 27 13:11 Home
drwxrwx--x 8 root root  8 Aug  4 10:30 Image
drwxr-xr-x 7 root root 10 Jul  9  2023 ix-applications
sam@nas:~$ sudo ls -l /mnt/Data/Game
[sudo] password for sam:
total 1
drwxrwx--- 2 sam sam 2 Jan 27 14:17 sam //<<---Where did this come from?! 

28/1/24

Update - Somehow everything started working. I don't know what I did but everything is working now..Yay mysterious resolutions! Sorry future folk that find this post :(

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TrueNAS Community
truenas.com › forums › archives › general help › general
Unable to write to SMB share | TrueNAS Community
November 19, 2021 - @Johnpants Your mistake was not to create datasets within your pool. As you've found out, you cannot change the "root dataset" permissions via the WebUI, nor create "root user" SMB shares. If you need to delete the originals then just use the TrueNAS shell and delete folders/files directly ...
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TrueNAS Community
truenas.com › forums › truenas scale
SOLVED - Can't figure out app permissions | TrueNAS Community
January 22, 2023 - When I make any changes to permissions like adding a user to ACL, it seems to break everything. It can still read but it can't seem to write because I get the following in the logs: ... 2023-01-22T14:49:33.353377768Z 2023-01-22 08:49:33: ERROR[Main]: ServerError: Failed to initialize world: Failed to update the config file 2023-01-22T14:49:33.853503353Z 2023-01-22 08:49:33: ERROR[Main]: Error writing configuration file: "world/world.mt" 2023-01-22T14:49:33.853545168Z 2023-01-22 08:49:33: ACTION[Main]: Server: Shutting down My runAsUser and runAsGroup are both set to 0 since it can't seem to even start unless it has root permission.
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TrueNAS Community
truenas.com › forums › applications and jails
SOLVED - Unable to open file for writing. Read-only file system | TrueNAS Community
June 29, 2022 - If you look under the "Security and Permissions" settings and click on "Show Advanced Security Settings" you will find an option that is enabled by default which says "ReadOnly Root Filesystem" by unchecking this box I was able to perform the ...
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Reddit
reddit.com › r/truenas › permissions issue...
r/truenas on Reddit: Permissions issue...
March 1, 2025 -

Hi All,

As background, I have Truenas Electric Eel running, it has a few TB of media stored on it already. And now I've started the journey of building and Arr stack on this Truenas server.

So, I was following a popular guide for arr on Truenas, and started by creating all the datasets for the apps, these are set with the "app" ownership (as opposed to smb etc).

The storage file structure is as follows VAULT > APPS > {APP Name} VAULT > MEDIA > {MOVIES, TV, MUSIC, DOWNLOAD etc}

Starting with installing qbittorrent, all went well and successful, until I tested. I grabbed a torrent and it errored straight away. Looking in the logs it says it doesn't have permissions to the downloads folder

I didn't mention above all the media is an existing SMB share..

How do I fix the permissions to allow the apps to write into my smb share?

Good chance I haven't given enough info, so please let me know if you need anything further.

Thanks S

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TrueNAS Community
truenas.com › forums › archives › general help › operation and performance
Unable to edit/fix permissions | TrueNAS Community
December 9, 2021 - Thought it was going to work until I went to apply an open preset ACL to the SMB Share and I got this error again. ... Again, the GUI won't let you change permissions for the root dataset. Are you sharing out your root dataset? That's not a supported configuration.
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SABnzbd Forums
forums.sabnzbd.org › home › board index › support › bug reports
Cannnot change permissions [TrueNAS ] - SABnzbd Forums
Hi, I upgraded sabnzb on my TrueNAS box last night (using the official iXsystems plugin) to 3.5. After doing that I was getting errors on downloads such as 2022-02-14 22:20:58,552::ERROR::[filesystem:611] Cannot change permissions of /media/Download/_UNPACK_<filename> Enabling debug logging, the sabnzb.log file contains messages such as 2022-02-15 09:14:20,084::DEBUG::[filesystem:606] Applying permissions 0o100666 (octal) to /media/Download/_UNPACK_<filename> After a quick google, the fix seemed to be to clear the permissions field in the settings, but it was already empty.
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TrueNAS Community
truenas.com › forums › truenas core
I have no write permission to my Truenas Samba share from either WIndows 11 or Ubuntu 23.04 | TrueNAS Community
February 5, 2024 - This share is visible in all windows 11 boxes and all Ubuntu 23.04 boxes.... I have enabled guest access and browseable. I cannot however create a folder or create a new file on the Truenas Share. I get the message: Destination folder access denied You need permission to perform this action.
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Reddit
reddit.com › r/truenas › custom app permissions denied on in-container home folder of the app
r/truenas on Reddit: Custom APP permissions denied on in-container home folder of the app
July 22, 2024 -

Hello!

I've been trying to install custom apps (in this particular instance Stable diffusion and comfyui) but I continue to get the same problem.
My app has no write permissions on any of the container managed storage (on hostpath mounted drives there is no such issue.

2024-07-22 11:04:49.848636+03:00There was a problem when trying to write in your cache folder (/.cache/huggingface/hub). You should set the environment variable TRANSFORMERS_CACHE to a writable directory.
2024-07-22 11:04:50.440587+03:00Traceback (most recent call last):
2024-07-22 11:04:50.440685+03:00File "/app/comfyui/main.py", line 210, in <module>
2024-07-22 11:04:50.440746+03:00server = server.PromptServer(loop)
2024-07-22 11:04:50.440784+03:00File "/app/comfyui/server.py", line 72, in __init__
2024-07-22 11:04:50.440858+03:00self.user_manager = UserManager()
2024-07-22 11:04:50.440888+03:00File "/app/comfyui/app/user_manager.py", line 22, in __init__
2024-07-22 11:04:50.440931+03:00os.mkdir(user_directory)
2024-07-22 11:04:50.440960+03:00PermissionError: [Errno 13] Permission denied: '/app/comfyui/user'
2024-07-22 11:04:51.074142+03:00/app/comfyui

In the /app/comfyui i cannot write anything.
However for example in my mounted /mnt/Test/appdata/comfyui/checkpoints to /app/comfyui/models/checkpoints i have no such issues. I can download, create files, etc.
It seems I'm missing some permissions step, but I don't know what it is.
I'm using this docker image:
https://hub.docker.com/r/universonic/comfyui
It's absolutely the same with the stable-diffusion docker image.

I'm running the last public release TrueNAS SCALE Dragonfish.

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TrueNAS Community
forums.truenas.com › truenas general
Write only access rights - TrueNAS General - TrueNAS Community Forums
November 21, 2024 - In my workflow I have few MFP devices which can output their files to truenas SMB share. This devices have their own account and I would like to limit access rights of this devices so that they can only write new files …
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TrueNAS Community
truenas.com › forums › truenas scale › operation and performance
I messed up permissions. Big time. | TrueNAS Community
March 26, 2024 - Writing to the drive would cause even more errors (Chcksum). Now when I removed that file fully, no Chcksum, at all, even under heavy writes. Also the error message gave you the clou, probably your user you used to access the data (did you use admin for SMB?) didn't have the execute permission.
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TrueNAS
truenas.com › tags
permissions | TrueNAS Community
Seems like this last freenas update broke permissions. If i try to delete a file in a folder that im apart of the group of with full read/write permissions, i get error message saying i need permission from Server\*User Here of share* I haven't changed any of my permissions ever since i...
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GitHub
github.com › filebrowser › filebrowser › issues › 3153
TrueNas Install - Cannot figure this out - Keep getting 'You don't have permissions to access this.' · Issue #3153 · filebrowser/filebrowser
April 24, 2024 - Description Install on VM of Truenas scale. Have installed several times, followed several tutorials. This will not install correctly. I keep getting 'You don't have permissions to access this' when logging in and trying to access the share folder that I assigned at installation. Expected behaviour Be able to control files int the share. What is happening instead? Have no access to write, read, or edit. Get a 403 Error at the bottom of the window.
Author   filebrowser
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Reddit
reddit.com › r/truenas › please help: permissions error when transferring files over smb
r/truenas on Reddit: Please help: Permissions Error when transferring files over SMB
January 21, 2026 -

Hey,

I have TrueNas Scale (Fangtooth, 25.04) installed on an old PC. Really only using it to store some photos and run my Plex Server.

Pretty much every time I transfer files over SMB I get an error from Windows Explorer, if I hit try again it will successfully transfer.

I've also tried FastCopy, which will similarly give me a permissions error - This is a bit better for when transferring a lot of small files like photos, that way I can leave it unattended and just go back and identify which ones weren't successful and do those after.

However it's quite inconvenient when doing larger files like movies, tv shows etc.

If anyone could give me some insight as to how to fix this I would really appreciate it, thanks.