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.
626 questions
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One SMB server (Linux) does not appear in Finder unless already connected
I have a system running MacOS 26.0.1. This is my only Mac on the network. There are several servers - most of which are Ubuntu 24.04 - running SMB. I can connect to any of these servers. But only ...
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131 views
SMBServer-Operational Error 1016 on File Server 2022
I recently migrated from a 2019 file server to a 2022 OS. Users began experiencing slowness in Excel files. I did not use the same hostname and IP address as the old file server. I am using a new ...
1 vote
1 answer
144 views
How to share a folder on Windows Server 2022
Estoy usando Windows Server 2022 y quiero compartir una carpeta en la red para que otros usuarios puedan acceder. Hice clic en “Compartir” pero los demás no pueden ver ni abrir la carpeta. ¿Alguien me ...
1 vote
1 answer
396 views
Samba server on Ubuntu not recognized for TimeMachine on MacOS X
I am trying to use an Ubuntu Samba SMB share as a MacOS X Time Machine backup volume. The SMB mount shows up on the desktop but the Time Machine configuration does not show the volume as a possible ...
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29 views
Can't map a drive letter to a WSFC client access point - but can browse via Windows Explorer. Why?
I have a WSFC file server cluster set up (WS 2025). There is a client access point configured: ClientsGoHere.mydomain.com When I browse to \\ClientsGoHere in Windows Explorer, I'm greeted with the ...
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386 views
net use stopped working April 17, 2025 for no reason - System error 67
I cannot access NAS via SMB shares on a Samba share on a Raspberry pi from on one Windows 11 Pro 23H1 laptop. All other Windows and Chromebook hosts are able to access shares without issue. On the ...
5 votes
2 answers
563 views
How can I troubleshoot the difference between SMB connectivity across servers?
Background I inherited a group of Windows Server 2019 servers recently. The setup is...not ideal. They are all part of a workgroup, myworkgroup, but there's no domain involved. Each has their own ...
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461 views
Samba best practices for ACL’s for windows clients
I want to create fileshares to serve to our windows clients. We are currently working with an old samba server which wasn’t set up properly by the previous IT guy (e.g. users loosing access to ...
0 votes
1 answer
725 views
Issues connecting to shared printers from Windows Server 2022
I need to map a printer which is being shared by a Windows 11 client onto a Windows Server 2022 machine. The server is able to see the UNC path of the printer in File Explorer, but trying to connect ...
1 vote
1 answer
151 views
Can create and modify but not delete files on Time Machine SMB Share backed by SSHFS
I am using NixOS 24.11 and the path of the SMB share is an SSHFS mount point. The following configuration works, I can connect, create, modify, and delete files, but the share does not appear as a ...
0 votes
1 answer
95 views
Enabling SMB compression for IPC$ share
Is it possible to enable SMB compression feature for IPC$ share? I'm developing a SMB proxy that will handle SMB traffic for IPC$ share, so I want to know if I should support compression feature. It ...
1 vote
1 answer
270 views
Is it possible to anonymously access SMB, or login multiple times concurrently?
I have an Asustor NAS (FS6706T) that is primarily a local media-sharing device. I have multiple machines that should access the shared folders. Currently, I must login "Enter Network Credentials&...
2 votes
0 answers
970 views
Configuring SMB Shares on MacOS with /etc/nsmb.conf - Write throttling Issues
Experimenting using some old equipment to serve a 8 bay RAID over 10gbe network, using a 2019 MacPro as a server. This unit is currently running Monterey. Initial testing yields good results to a ...
2 votes
2 answers
270 views
Data corruption and Memory Access Violation when trying to run TallyPrime on Linux with multiple users sharing data
I am trying to run TallyPrime on Linux with Wine and it works very well for a single user. My client has a setup with Citrix on Windows Server where multiple users use app streaming and run multiple ...
2 votes
1 answer
747 views
Windows SMB and NIC RSS
I trying to resolve an issue with SMB and RSS on my Windows 10 Pro. I try to figure out how SMB detects if NIC supports RSS and uses Multichannel to decrease CPU single-core utilization. I have a case ...
3 votes
1 answer
781 views
Too many SMB SAMR requests to Primary Domain Controller from Remote Site
I've noticed that our Windows Clients from remote sites cause a lot of SMB traffic to our primary domain controller at our main site. Every location has its own domain controller and "Active ...
1 vote
0 answers
188 views
Redirect access to an SMB share to local folder on macOS
We use proprietary client/server software that includes a file browser that displays the file structure of an SMB share. The content is read server-side, and presented to the user in a browser window ...
1 vote
4 answers
2k views
Mac OSX Finder does not display some files on SMB share
Sometimes in Finder on Mac OSX users cannot see some files. Which files are not visible seems random. It doesn't depend on the version of Mac OSX, and doesn't depend on the version of SMB. I have ...
0 votes
1 answer
1k views
Error on mountig Windows 11 share on Ubuntu Server (or Desktop) 24.04
I am trying to mount a Windows 11 share on Ubuntu Linux, version 24.04, both desktop and server edition, with no success. I tried the following command: mount -t cifs -o user=guest,password= //host/...
1 vote
1 answer
264 views
Can't create Windows Server 2012 Failover Cluster Share Resource for mounted folder [closed]
We have two a two node Windows Failover Cluster. One resource is a folder that is mounted on a Windows disk1.1. Disk 1 has a file share created on the cluster. We are trying to create another file ...
0 votes
0 answers
114 views
Exchanging data with Windows XP workstations in a corporate network
We have Windows XP workstations that are used to exchange data with other computers on the network. USB media isn't an option. Equipment on both ends of the link expect a Windows share (SMB). For ...
0 votes
1 answer
2k views
Properly mounting a Samba share in Ubuntu/Linux
I am working in a company that uses a Windows AD. We have a TrueNAS setup with some SMB shares that work well under Windows, but I don't really understand how to properly set them up under Ubuntu. So ...
1 vote
1 answer
112 views
How to implement virtual UNC mapping in a Windows user session?
I need to implement virtual SMB UNC mapping in a Windows user session. Similar to what "NET USE H: \\realhost\share" command does, but redirect "\\virtualhost\share" to "\\...
0 votes
1 answer
313 views
Azure Files performance for a remote IPSEC VPN connected site
I have an Azure Files premium account which I setup SMB multichannel. I setup a test folder with 50,000 very small files. If I test with a single file at a remote IPSEC connected site I get around 5-...
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1k views
Windows Server 2022 - Port 445/TCP Not Accessible from other machines
I have two physical copies of Windows Server 2022 running, both machines have firewalls completely disabled. I have enabled file and folder sharing on both machines on the domain, private and public ...
0 votes
1 answer
2k views
What am I doing wrong? access-based enumeration not working with share-subfolders
Create a share D:\Shares\DATA_AUTH_TEST. Make sure ABE is enabled, DOMAIN USERS is granted read permission. Create a folder in D:\Shares\DATA_AUTH_TEST\USER1, Disable inheritance, grant full control ...
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975 views
Server not listening on port 445
I have a Windows Server 2016 server that is not listening on port 445. The Server service is running and the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\LanmanServer\Parameters registry entry ...
2 votes
1 answer
870 views
How do I determine the current leasing mode of an SMB share?
I am preparing to migrate files from a Windows Server 2016 server to a new Windows Server 2022 server. There is a complicated set of NTFS and Share permissions that I need to replicate. I have found ...
1 vote
0 answers
1k views
Unable to access SMB share with DNS Cache service disabled from Windows Server 2022 but it works on Server 2019
I have a requirement to disable the Windows DNS Cache on a new Windows Server 2022 RDS VM. Trying to access a SMB share hosted on a Windows Server 2022 file server, all my servers are joined to a AD ...
0 votes
1 answer
552 views
Logging Source IP of SMB Login Attempts
We have an TrueNAS System running TrueNAS-13.0-U5.3. It is bound to Active Directory and used solely for SMB file sharing. Recently there have been periodic event where SMB service quality is degraded ...
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0 answers
148 views
Is there a web frontend for cifs/smb like Synology Filestation?
I´m looking for a Web-Frontend to browse, download and upload files exported from another Server via SMB. It has to offer ldap/AD-login for Users and honor the permissions from the Share. I know most ...
0 votes
0 answers
205 views
TCP capture show different user when attempting SMB connection
I'm attempting to map a SMB share on an Isilon server in windows 10. I have Ubuntu and Windows computers on the same network, can mount the SMB fine on the Ubuntu machine. But when trying windows ...
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464 views
Cannot connect to Ubuntu Samba from Windows
I setup Samba on a Ubuntu 22.02 server. I cannot access the shared with Windows but I can with Linux. Ports 139 and 445 are open and listening on loopback and lan interface. I even made the share ...
2 votes
2 answers
5k views
Cannot connect to Samba share via VPN
I have a Wireguard site-to-site VPN that connects successfully. I can ping the remote Samba server using it's IP address 192.168.30.1 I cannot access a share over the VPN tunnel using its IP address \...
0 votes
1 answer
1k views
Trouble debugging user access to Windows SMB shares
I am having trouble with 2 PC of my domain, both on Windows 10 1909, which I'll call "01" and "02", using a domain service account (called "s_automate" to connect to a ...
1 vote
1 answer
2k views
Samba server - single user connection limit
Is there a limitation for samba server to allow multiple connection's from single user? (Multiple PC's connecting to same samba server with same account) User was created through smbpasswd -a [...
0 votes
1 answer
454 views
NFS re-export between VPN-connected servers
I have two Linux NFS servers on two locations (two different networks), each providing at least one NFS share. Those servers are connected through VPN and each other NFS is mounted to folder on each ...
0 votes
1 answer
9k views
Difference between SMB and NAS
I am getting aboard my family businesses and every thing is made with Microsoft. I see that 90% of the processes can be done with free software, and in this case, file sharing. My father always ...
0 votes
1 answer
2k views
Mount smb remote storage on debian with local disk caching using FS-Cache for CIFS
I am trying to connect a smb remote storage to my debian server and use the available space on the local disk as a cache using FS-Cache for CIFS. I have already tried the following code but it doesn't ...
1 vote
1 answer
835 views
SMB MultiChannel pinning a few CPU cores and not hitting NIC saturation
I have two servers with twin RDMA enabled 25GbE NICs installed. For the time being, during testing, they are direct connected... no switch between them. If I just make a single SFP28 connection ...
1 vote
1 answer
1k views
Why cannot I map an DSF/SMB share using New-SmbGlobalMapping?
I've got a DFS folder: \\my.domain\Storage$ I'd like to map it to a particular Windows Server Core machine using the New-SmbGlobalMapping PowerShell command using specific credentials. Alas, when I ...
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0 answers
181 views
Network drives autoplay
I am having some trouble figuring out what some SMB requests to an AutoRun.inf file are. My situation is this, i have a fileserver Windows Server 2016, and all my workstations mount a shared drive ...
2 votes
0 answers
5k views
Unable to mount SMB shared : mount error(95): Operation not supported
I have created a shared folder in QNAP TS-433. I can mount the SMB share on a Windows client. I am unable to mount the SMB share on Linux (Centos 6.8). mount -t cifs -o ver=3.0,user=test //172.17.134....
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4k views
Use smb share also as docker volume
I've one Debian 11 Server which has multiple smb-shares under /samba/. Now I'd like to run multiple instances of a file synchronisation software called Syncthing inside docker containers on this ...
0 votes
1 answer
1k views
Does an SMB share server "cache" permissions?
I'm trying to set up a somewhat complex access scenario for a shared folder (domain-joined Windows Server 2022) and I'm having some really weird things happen. I've created 3 groups in AD: Top Test ...
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0 answers
2k views
KRB5KRB_AP_ERR_MODIFIED trying to use SPN credentials
I'm trying to set up a Windows 2019 system as an SMB server to work with third-party software on an external, non-Windows system that uses Kerberos to authenticate to the SMB server. This SMB server ...
1 vote
1 answer
996 views
CIFS Mount Share: Permissions on one File Seemingly Corrupted
I have a multi VM Windows (Server 2019) solution, hosted in a datacentre, with services which require a Redis cache. Due to security concerns, the Windows fork of Redis is not allowable. Therefore, I ...
1 vote
1 answer
2k views
Logging samba share network activity
For the purpose of this question, I have a server called server1 hosting the samba network share share1 on my local network. User1 can access this share with read and write permissions. I'm looking to ...
1 vote
1 answer
499 views
NFS + SMB sharing file locks
Is there any way to share file locks between samba(smbd) and nfs(-kernel-server)? I assume that this is hard to impossible on most linux distributions. The regular smb/nfs implementations have no way ...
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422 views
What does it mean if I don't receive a SMB Negotiate Protocol Response from server?
What does it mean to not get an SMB Negotiate Protocol Response from server? Unable to mount fileshare drive (a third-party fileshare outside Azure). The architecture is similar to this one: https://...