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Questions tagged [server-message-block]

Server Message Block is a network file sharing protocol created by Microsoft. This is the protocol used for file and printer sharing on Windows networks.

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Why does connecting to SMB share also use wsman

When I connect to a file share using \servername\share in Windows explorer (windows 10 to a windows server share), I notice that there are also connections from my host to the destination server over ...
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Options to improve container volume mount's SMB metadata operations performance

Question Are there any ways to improve metadata operation performance between a Linux based container running under Azure App Service and a mounted volume hosted in Azure Files? Context I recently ...
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1 answer
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Temporarily prevent SMB file from being locked in-use - Windows

I have a file \\server\share\myApp\app.exe that a handful of people run directly from the share. I need to update that file occasionally, but it is usually locked due to the open SMB sessions. My ...
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SMB mounted filesystem from old windows machine shows all files with identical names

We successfully mounted on a linux server a folder shared by an old (XP) windows panel PC. # mount.cifs //192.168.X.Y/folder /mnt/folder Once we inspected the folder on client machine, we noticed that ...
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  • 135
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1 answer
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How to install UWP apps on a Truenas SMB share

Overview: Is it possible to install a UWP app on truenas via a smb network share? I know the whole encryption thing and acl will cause issues, but is there either a way to spoof encryption/acl? ...
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3 votes
1 answer
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Why does a MS GPO option break SMB shares that use a hosts file for the machine name?

We've set "Microsoft network server: Server SPN target name validation level" to "Required from client" on our test GPO. Our test systems have some custom machine aliases in their ...
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Samba file lock prevents media unmount

I have a small server with a samba share that sometimes I use to share removable disks connected in the hot swap bays. After mounting a disk and accessing it, I try to unmount it, but umount refuses (...
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CIFS shares on Centos7 are not available if single node of fileshare cluster goes down even if using FQDN for multi-node storage cluster

I am currently mounting cifs shares using /etc/fstab and 'mount -a'. Here is an example of one of the mount fstab lines (minus some specfic share naming info): \\filer-01.domainname.com\apps\...
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SMB Connection to Server fails with "The Network path was not found", SMB attempts to connect over HTTP

Have an issue where one spesific user is unable to connect to any SMB shares on any Windows Servers, they are not in the same domain, but there's Trust between the domains, and their user has the ...
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Is there a way to identify what computer created a file on a Samba share (mixed-environment)?

Am currently working on a small side project app that uses a file watcher to monitor specified folders for changes. One of the more common uses of the app would be a network share, such as a samba ...
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Where are SMB ACL's stored when using AD with Solaris ZFS?

I have a Solaris 11.4 instance bound to a 2012 Domain. Solaris allows you to edit SMB share ACL's from a Windows DC via the Computer Management Snap-in. My question is: Are those ACL's then written ...
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How to access a SMB NAS installed on a Windows Domain from a .NET Core application containerized on Microsoft Service Fabric (On Prem)

We have to access a Windows domain SMB NAS from a .NET Core 3.1 application installed on a container; this container runs on Microsoft Service Fabric On Premise. The current solution, before starting ...
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Video post production storage server - slow transfer speeds of small-ish files (1-2M) over SMB to ZFS pool. (CinemaDNG format)

I'm a Camera OP / Video editor, but I manage our post infrastructure for our team of 2 people at small production company. We're having an issue with slow transfer speeds over the network from one of ...
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1 vote
1 answer
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How to use SMB Multichannel over VPN?

According to this article SMB Multichannel can provide the following capability: Increased Throughput - The file server can simultaneously transmit additional data by using multiple connections for ...
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1 answer
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How can I set up Unix permission sync properly with Samba SMB 3.1.1 [closed]

I currently have a NAS for our household (called Waitress) which is running Debian 11 with Samba using SMB 3.1.1. It is connected to a 1TB USB-SS HDD. I also have an Ubuntu machine which is my own ...
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Backup (SeBackupPrivilege) and restore privilege(SerestorePrivilege).for domain user

How do I verify the if the domain user has backup (SeBackupPrivilege) and restore privilege(SerestorePrivilege)? I tried added the domain user to backup operators group. But Whoami /priv command ...
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1 answer
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Is UID required when providing a GID in an fstab entry for an ntfs drive?

I have an Ubuntu Server 20.04 installed on a Raspberry Pi 4. I am trying to mount a hard drive that should be accessible by two different samba users (user1, uid=1001 and user2, uid=1002). I created a ...
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can't write to dockerized samba server share from windows 10 machine

Hi so I am in the process of setting up a dockerized samba server and for the most part it's setup however I can't/don't have permission to write to the server from a windows 10 machine. I tried ...
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File server not responding

I have a Windows Server 2019 file server (Hyper-V VM) that stops to work weekly. Every Monday morning share access isn't working. I can browse the server, but when I click on a share Explorer just ...
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Samba D states - High CPU usage

Currently the server that is providing samba service to a bunch of clients (Linux and Windows clients) is having 100% CPU usage and high sysload. Looking through the process list (ps aux), there's a ...
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2 votes
1 answer
4k views

No write permission on mounted CIFS drive

I'm on a Linux machine trying to mount an SMB share inside a big network via my Active Directory username: mount -t cifs -o username=myuser,domain=mydomain //server/share /mount/path After the ...
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0 answers
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File server with 2-factor authentication?

is it possible to secure a file server with 2-factor authentication, so that when a user wants to connect, he/she not only has to enter a password, but must also use a fingerprint or an authentication ...
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1 vote
0 answers
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NetFT - Validation Failed - SMB Network Path Not Found

Two new Windows Server 2019 Datacenter edition servers setup in a Failover Cluster, cluster validation is failing at 'Validate CSV Settings' as follows: Validating Server Message Block (SMB) share ...
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1 vote
1 answer
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Cannot access samba Ubuntu server via hostname UNC path (IP works) in Windows explorer

Setup We have an AD server running on Windows Server 2012 (ad01.<domainroot>). There is a Samba file server running on Ubuntu 20.04 (fs02.<domainroot>). The file server is domain joined ...
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SMBClient does not accept domain.example.com@SSL URL format, until it sometimes does for a while - WebDAV redirect not triggering

So I have set up an SMB server running over HTTPS, and am trying to connect to it via a URL like \\domain.example.com@SSL\path\to\file.txt However, Windows fails to connect to it, and the SMBClient ...
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0 votes
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Using a Mikrotik router's SMB service as a file share witness gives error

I am having an issue trying to use use a Mikrotik CCR router as a file share witness in a WS2019 cluster. I can connect to the share with RW access on a standard Windows 10 machine as well as on one ...
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0 votes
1 answer
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Why is file browsing so slow during file upload / saving over VPN?

Working remotely over VPN, when I save a large file to our file server, I am unable to browse any other file shares on the server during that time. Basically, windows explorer hangs up and is stuck, ...
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1 vote
0 answers
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Domain Controller DNS alias

I recently updated an old Win2008R2-based domain to a new Win2019-based one (with the common promote / demote / decommission dance). This was for a very small office (3 peoples), so this is a single-...
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1 vote
2 answers
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Clear cached authentication for network share

Context: I map a cifs share in windows using NTLMv2 authentication, as the legacy server doesn't support kerberos. I am not prompted for login: net use S: \\server.domain.com\share /persistent:yes The ...
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0 answers
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What is the equivalent of Get-SMBSession in Windows Server 2008?

What is the equivalent of Get-SMBSession in Windows Server 2008? I am not using Get-SMBSession inside windows Server 2008. thanks,
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Why would blocking NetBios packets impact SMB3?

Question Why should NetBios filtering impact SMB3 / the ability to connect to port 445? Context Some users (including myself) were having issues accessing file shares hosted in Azure Files from their ...
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1 vote
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SMB connection to MS-DOS server from Windows 10 1809+ fails

We need to interface with a legacy system that run MS DOS 6.22, with a TCP/IP stack and wg1049.exe to create a SMB server (more or less as described on this site). Enabling SMB1.0 on our Windows ...
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How to force client to download files locally over SMB instead of holding the file open

Is there a way client or server side MacOS and Windows. To force a client to download files locally, rather than to hold the file open when being read? Similar to how Chrome OS does this.
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1 answer
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windows server RDP works but c$ shared folder access denied

this might be something simple, but I think I rather ask here. We have some servers in our environment which are in workgroup, they can ping each other, test-wsman is a success, RDP from one to ...
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Why is Windows seeing my NAS as two separate devices (one with FQDN, the other with local name)?

My home LAN has a Windows Active Directory domain, with the DNS name corp.example.com. My Synology NAS has the FQDN nas.corp.example.com.. My Windows 10 desktop has the FQDN cube.corp.example.com.. ...
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0 votes
1 answer
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SMB Connection to non-domain server

I have a service that needs to establish a SMB connection to several servers. There is no issue with domain-joined computers using a domain account with access. However, I need it to connect to a few ...
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3 votes
0 answers
3k views

Setting up Samba in Docker

I am trying to set up a Samba server in Docker. I tried using dperson/samba image from docker hub at https://hub.docker.com/r/dperson/samba. I followed the instructions and tried to connect to it ...
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0 votes
1 answer
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Kerberos using JAAS and SMB protocol

We are using JAAS for Kerberos authentication. As a requirement from the customer, we want to make sure that SMB V2 or higher must be used during communication with KDC/AD. I've few basic questions ...
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0 votes
1 answer
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Local ethernet file transfers slower than internet downloads

I have an SSD drive connected to my router's USB 3.0 port. My computer is connected to the routeur directly through ethernet (no switch) and runs Windows 10. When downloading files from the internet ...
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1 vote
2 answers
1k views

Windows Server 2019 LMHOSTS File Does Not Work

I am trying to use the hosts/lmhosts files to create various aliases on my new Windows 2019 Server. It is on a corporate Active Directory Domain. "Use LMHOSTS" is checked in the TCP/IP ...
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3 votes
0 answers
404 views

Disabling NetBIOS for Samba SMB2

I need to get a pcap for SMB2, but without using NetBIOS as a transport (Direct TCP connection). I did disable netbios on server and client. Both sides on Linux. [global] ... min protocol = SMB3 ...
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1 answer
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Problems accessing shared folder in Windows clustered file Server 2008 R2

Firs of all I need to apologise for my poor technical and language skills. I will try to describe a problem as detail as I can. There is subnet 172.16.10.0/24 In this subnet I have 3 servers 1 storage ...
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-1 votes
1 answer
28 views

Windows server SMB instances

Is it possible to setup 2 instances of SMB with build-in Windows SMB? For example: folders A, B, C and D are need to be shared. Server has 2 NICs. Is it possible to do that folder A and B is ...
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0 votes
1 answer
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file shared on SMB on zfs on linux cannot be read over network

The file can be opened locally. I think the problem is related to attributes or permissions somehow, but I do not know how to check them. The files are GoPro videos in a particular directory, and ...
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0 votes
1 answer
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SMB file access behind NAT policy in firewall

I've got an file server behind a firewall (different network from my production network), so my computers are reaching files using a NAT policy in my Firewall. My users are having troubles and lost ...
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0 answers
60 views

Office files taking more than 30 seconds to load from network shares

Office files (Excel, Word etc.) have recently started taking 30 seconds + the normal load time to run from our file shares. We have it on several servers with 2012R2, 2016, 2019. We've also set up a ...
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1 vote
0 answers
381 views

Azure SMB File Share Permission Denied

We have an SMB share set up in Azure. Our infrastructure has an on-prem AD which synchronises with Azure AD and then there is an AADDS domain within Azure which has a copy of the user accounts. If I ...
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1 vote
1 answer
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Event 1007: The share denied anonymous access to the client

the body of evevnt is: " **The share denied anonymous access to the client. Client Name: \10.139.70.35 Client Address: 10.139.70.35:49157 Share Name: \*\in Share Path: ??\C:\Users\jodat\Desktop\...
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0 votes
1 answer
202 views

In what order to executable files get transferred and executed from a network share?

What is the difference between transferring an executable file to your local computer before running it vs directly running it from an SMB share. Does running it from the share transfer the whole file ...
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0 answers
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How should I block traffic to destination port using iptables?

I have received an abuse from my server provider and one thing which is the same is that the target on destination IPs is the SMB (445) port . How can I block destination traffic to port 445 using ...
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