Release Notes for SMB Service

Fixed Issues

1. Fixed a security vulnerabilities (Synology-SA-25:01).

Fixed Issues

1. Fixed a security vulnerabilities (Synology-SA-25:01).

What's New

1. Added support for SMB3 directory leasing.

Fixed Issues

1. Fixed an issue where domain administrator identities could be displayed incorrectly.
2. Fixed an issue where SMB Service could consume excessive memory.
3. Fixed an issue where Windows commands on clients such as "openfiles" could fail.
4. Fixed an issue where searching for keywords with spaces on macOS might return incorrect results.
5. Improved the performance of file browsing and the display of encrypted shared folders.
6. Fixed an issue where joining an LDAP server could lead to slow folder browsing on macOS.
7. Fixed an issue that Resource Monitor could not display information properly due to problems with SMB-related data handling.
8. Fixed an issue where domain data synchronization could fail due to DSM updates, line breaks in the domain data, or other factors.
9. Fixed an issue where third-party software could fail to back up SMB shared folders.
10. Fixed an issue where deleting large files could interrupt SMB connections.
11. Fixed an issue where SMB2 lease could occupy excessive system space in certain situations.
12. Fixed an issue where reloading the connection path could cause content errors in the "home" folder.
13. Enhanced performance in multi-connection environments, covering various aspects including system operations and file access.

Fixed Issues

1. Fixed an issue where SMB Service could consume excessive memory.
2. Fixed an issue where domain users could fail to authenticate to access Synology NAS.
3. To improve efficiency, unused domain data will be excluded from syncing.
4. Fixed an issue where domain clients could stop syncing data from domain controllers.
5. Fixed an issue where SMB Service could prevent Resource Monitor from retrieving usage history.
6. Minor bug fixes for stability.

Fixed Issues

1. Fixed an issue where certain clients could cause continuous increase in SMB memory usage.
2. Fixed an issue where some users were unable to access "home" folder snapshots.
3. Fixed an issue where SMB Service prevented Synology Directory Server from migrating domains from Windows Sever 2003.
4. Fixed an issue where SMB durable handles were unexpectedly disabled and caused Time Machine backup to fail.
5. Fixed an issue where some users were unable to manage Synology Directory Server domains after installing the Windows July 2023 security update.

Fixed Issues

1. Fix an issue where editing files on Synology NAS may cause SMB Service termination if the memory is insufficient.
2. Fix an issue where connecting to Synology NAS with multiple user accounts simultaneously via SMB may lead to file inaccessibility.
3. Fixed an issue where selecting the Enable VFS module to convert Mac special characters option could cause a file to be inaccessible due to case sensitivity in the file path.
4. Fixed an issue where deleting a file opened by another user may cause Transfer Log to incorrectly record the IP of the deleting user.
5. Fixed an issue where users may experience connection failures between SMB clients and Synology NAS with SMB1 if NTLMv1 authentication and Server Signing are enabled.
6. Fixed an issue where user can't rename files whose names have been converted by VFS module.
7. Fixed an issue that could cause the directory service in Synology Directory Server to terminate unexpectedly when the certificate of Synology Directory Server did not match the hostname.
8. Fixed an issue that could cause Synology Directory Server to fail in migrating domains from Windows Server 2008 and earlier versions.
9. Fixed an issue where enabling Limit Zone Transfer and setting zone transfer rules caused the DNS Server startup to fail due to conflicts with SMB Service.
10. Fixed an issue where user can't open large Microsoft Office files when Opportunistic Locking and Asynchronous Read are enabled and SMB2 lease is disabled.
11. Fixed an issue where a specific combination of objects that exist in the directory could cause Synology Directory Server to fail to start up.

Fixed Issues

1. Fix an issue where editing files on Synology NAS may cause SMB Service termination if the memory is insufficient.
2. Fix an issue where connecting to Synology NAS with multiple user accounts simultaneously via SMB may lead to file inaccessibility.

Important Note

1. Starting from this version, the auto block feature no longer blocks SMB connections from private IP addresses or from IP addresses within the same subnet as DSM's network interface.

Fixed Issues

1. Fixed an issue where deleting a file opened by another user may cause Transfer Log to incorrectly record the IP of the deleting user.
2. Fixed an issue where users may experience connection failures between SMB clients and Synology NAS with SMB1 if NTLMv1 authentication and Server Signing are enabled.
3. Fixed an issue where selecting the Enable VFS module to convert Mac special characters option could cause a file to be inaccessible due to case sensitivity in the file path.
4. Fixed an issue where users cannot open the previous versions of Microsoft Office files.
5. Fixed an issue where domain users and groups may experience permission failures after upgrade.

Important Note

1. Starting from this version, only Windows Server 2008 R2 and above versions will be supported. After installing this update, the current Windows Server 2008 domain and earlier versions will be unavailable.

Compatibility & Installation

1. SMB Service 4.15.13-0781 requires DSM 7.2 and above.

What's New

1. Updated Samba to version 4.15.13.
2. Added the SMB3 Multichannel function. This function allows users to take full advantage of the network bandwidth by using multiple connections between the client and server, providing increased throughput and network fault tolerance. You can enable this function at Control Panel > File Services > SMB > Advanced Settings > Others.
3. Added support for SMB performance analysis in Resource Monitor.
4. Added support for Auto Block, which restricts SMB login attempts from abnormal IP addresses.

Fixed Issues

1. Fixed an issue where user can't open large Microsoft Office files when Opportunistic Locking and Asynchronous Read are enabled and SMB2 lease is disabled.
2. Fixed an issue where enabling Limit Zone Transfer and setting zone transfer rules caused the DNS Server startup to fail due to conflicts with SMB Service.
3. Fixed an issue where user can't rename files whose names have been converted by VFS module.
4. Fixed an issue that could cause the directory service in Synology Directory Server to terminate unexpectedly when the certificate of Synology Directory Server did not match the hostname.
5. Fixed an issue that could cause Synology Directory Server to fail in migrating domains from Windows Server 2008 and earlier versions.
6. Fixed an issue where a specific combination of objects that exist in the directory could cause Synology Directory Server to fail to start up.
7. Minor bug fixes.

Limitation

1. Please note that currently the SMB3 Multichannel function only supports x86 platforms. For models in x86 platforms, please refer to all models listed in this article.

What's New

1. Added support for SMB performance analysis in Resource Monitor.
2. Added support for Auto Block, which restricts SMB login attempts from abnormal IP addresses.

Fixed Issues

1. Fixed an issue where users cannot manage files in WriteOnce folders via the SMB protocol.

Important Note

1. Starting from this version, only Windows Server 2008 R2 and above versions will be supported. After installing this update, the current Windows Server 2008 domain and earlier versions will be unavailable.

Compatibility & Installation

1. SMB Service 4.15.9 requires DSM 7.1.1 or above.

What's New

1. Updated Samba to version 4.15.9.
2. Added the SMB3 Multichannel function. This function allows users to take full advantage of the network bandwidth by using multiple connections between the client and server, providing increased throughput and network fault tolerance. You can enable this function at Control Panel > File Services > SMB > Advanced Settings > Others.

Fixed Issues

1. Fix an issue where users cannot access home directory.
2. Minor bug fixes.

Known Issues

1. If your device is part of a domain and you're using Active Backup for Business to back up your file server, it is necessary to update Active Backup for Business to version 2.6.0 or above.
2. If your Synology Directory Server domain has been migrated from Windows AD, we recommend not updating to this version as this may cause start-up failure of your Synology Directory Server. We will release a version including the patch for this issue in the upcoming weeks.

**Limitations

1. Please note that currently the SMB3 Multichannel function only supports x86 platforms. For models in x86 platforms, please refer to all models listed in this article.

Fixed Issues

1. Fixed an issue where searching with Finder Search on macOS 13 could not function properly.
2. Fixed an issue where editing iWork files simultaneously might fail due to compatibility issues with macOS 13.
3. Fixed an issue where the transfer log incorrectly displayed the user responsible for deleting files.

Compatibility & Installation

1. SMB 4.10.18-0330 requires DSM 7.0.1 Update 4 or above.

Fixed Issues

1. Fixed an issue where searching with Finder Search on macOS 13 could not function properly.
2. Fixed an issue where editing iWork files simultaneously might fail due to compatibility issues with macOS 13.
3. Fixed an issue where the transfer log incorrectly displayed the user responsible for deleting files.

Fixed Issues

1. Fixed an issue where users could not join their computers to Synology Directory Server after updating OS to Windows 11 22H2.
2. Fixed an issue where exporting system configuration backup file might fail.

Fixed Issues

1. Minor bug fixes.

Compatibility & Installation

1. SMB Service 4.10.18-0542 requires DSM 7.1.1 or above.

Fixed Issues

1. Fixed an issue where enumerating the file list using Finder on Mac is slow if the device has joined an LDAP server on an external network.
2. Fixed an issue where copying files to other directories in the same shared folder using Finder on Mac is slow.
3. Fixed an issue where some files could not be copied, moved, or deleted via Windows File Explorer.
4. Fixed an issue where disabled SMB Service was automatically enabled after updating DSM.
5. Minor bug fixes.

Compatibility & Installation

1. Updated to be compatible with DSM 7.0.1 Update 4. SMB 4.10.18-0329 requires DSM 7.0.1 Update 4 or above.

Compatibility & Installation

1. Updated to be compatible with DSM 7.1 Update 1. SMB 4.10.18-0434 requires DSM 7.1 Update 1 or above.

Fixed Issues

1. Fixed an issue where domain user privileges in nested domain groups may be abnormal.

Fixed Issues

1. Fixed an issue where adding a Synology NAS with no volumes to a domain server and then creating a volume would make domain users unable to sign in to DSM.

Fixed Issues

1. Fixed an issue where some files could not be read if asynchronous read has been enabled.
2. Fixed an issue where compacting VHDX disks might fail when backing up via Windows Server Backup.
3. Fixed an issue where using Adobe Bridge to rate color-tagged files on macOS might fail.
4. Fixed a security vulnerability regarding Samba (CVE-2020-25717).

Fixed Issues

1. Fixed an issue where domain users may be unable to connect to the SMB by using NTLM authentication when the Synology NAS is used as a domain server.
2. Fixed an issue where searching through data on Synology NAS via Windows Explorer might cause SMB service to consume excessive memory.
3. Fixed an issue where browsing photos stored on Synology NAS via Windows Photo Viewer might cause the application to shut down unexpectedly.
4. Fixed an issue where searching via Windows Explorer failed to find items whose type was a folder.
5. Fixed an issue where LDAP users could not sign in to SMB connections.
6. Fixed an issue where enabling the "VFS module to convert Mac special characters" function might make Synology NAS files not modifiable.
7. Fixed a security vulnerability regarding Samba (CVE-2020-25717).
8. Minor bug fixes.

Compatibility & Installation

1. SMB Service 4.10.18-0415 requires DSM 7.1 or versions above.

What's New

1. Added the SMB aggregation portal function, which allows accessing shared folders on multiple Synology NAS via one single SMB portal on a personal computer. This function replaces the "MSDFS VFS module" function in SMB Advanced Settings.
2. Added support in Advanced Settings for monitoring changes in subfolders within a directory.
3. Added support in Advanced Settings for synchronizing data to the drive immediately upon receiving SMB client requests.
4. Added support to log failed connections due to application privileges.

Fixed Issues

1. Fixed an issue where connected shared folders on Windows became inaccessible after being restored via Snapshot Replication.
2. Fixed an issue where enabling the "VFS module to convert Mac special characters" function might make Synology NAS files not modifiable.
3. Fixed an issue where users could not create new folders or files inside folders that were found as results of Windows Explorer searches.
4. Fixed an issue where searching via Windows Explorer failed to find items whose type was a folder.
5. Fixed a security vulnerability regarding Samba (CVE-2021-20254).
6. Minor bug fixes.

Important notes

1. This update was recalled on February 16, 2022, because domain users may be unable to connect to the SMB by using NTLM authentication when the Synology NAS is used as a domain server. The issue is fixed in version 4.10.18-0327.

Fixed Issues

1. Fixed an issue where domain users might not be able to sign in to SMB.

Fixed Issues

1. Fixed an issue where incorrect time is displayed for indexed data on J and Value series when searching via Windows Search.
2. Fixed an issue where backing up files from one Synology NAS to other servers using Veritas Backup Exec might fail.

Important Note

1. The update is expected to be available in all regions within the next few days. The actual time of release may vary slightly depending on the region.

Fixed Issues

1. Fixed an issue where SMB authentication may fail for domain users after enabling SMB application privileges.
2. Fixed an issue where using VFS module to convert Mac special characters may not work properly when converting invalid characters.
3. Fixed an issue where downloading files via Windows might fail when the user has read-only access to the file.

Fixed Issues

1. Fixed an issue where the full name of domain groups were not updated correctly.

Fixed Issues

1. Fixed an issue where the domain administrator cannot properly create replication tasks in Snapshot Replication.
2. Fixed an issue where open files via SMB may take longer.

What's New

1. Modularized the SMB file service into a package.
2. Separated NTLMv1 authentication into an independent option.
3. Added support for cross-protocol locking between SMB and AFP.
4. Allows users to enable or disable SMB transfer logs for permission changes, providing more flexible transfer logs.
5. Enhanced the encryption performance by up to 10% on certain models with the x86 platform.
6. In Windows File Explorer, users can now search for the files and their content in indexed folders.
7. Added support for asynchronous read.
8. The default minimum SMB protocol is changed from SMB1 to SMB2 after reinstalling DSM.
9. Added support for logging failed SMB1 and NTLMv1 login attempts.

Compatibility and Installation

1. If Transfer Log was disabled in DSM 6.2, it will be automatically enabled after the update. To better track and record data operations, "Delete" operations are automatically selected by default.