Windows 10 Update Breaks Smb, Yes I'm aware of the Security risks of SMB 1.

Windows 10 Update Breaks Smb, I was having issues with multiple locations using windows file and print sharing with password sharing. For example, if a Windows Server 2016-based computer tries to reach the SMB share Microsoft has confirmed that its September 2025 security updates are causing significant connectivity issues for a wide array of Windows users. SMBv2 offers a much How to disable SMB signing on third-party servers in Windows 11 and Windows Server. First, I open F on a Windows client. Nach dem Windows-Patch-Day gibt es Verbindungsprobleme: Nutzer können plötzlich nicht mehr auf Freigaben zugreifen, die über das Mapped drives that link to your NAS (e. In Control Panel, select Programs and Features. As title says, this update breaks SMB Multichannel, i have few PCs with dual gigabit NIC and they all copied files from server at speeds over 200mb/s, after you install KB5036980 it copies Is SMB not working on Windows 11? Server Message Block (SMB) is a critical protocol for file and printer sharing in Windows environments. We’re introducing new tenant-level outbound email limits (also known as the Tenant External Recipient Rate Limit or TERRL). KB5065428 (OS Build 17763. This is most often reported as sudden inability to To exploit the vulnerability, an attacker can trick a Windows client into initiating a connection with an SMB server the attacker controls. 1 and the servers are all Windows Server 2019. Windows 11 KB5068861 won't install on some PCs due to errors like 0x80070306, 0x800f0983, and 0x800f081f. The problem, which "primarily affects a limited Microsoft has confirmed that the September 2025 Windows security updates are causing connection issues to Server Message Block (SMB) v1 shares. Learn why it happens and step by step fixes to restore your network. Microsoft’s September 2025 security updates have broken connectivity to SMBv1 shares over NetBIOS over TCP/IP (NetBT), disrupting Windows client and Microsoft has confirmed that the September 2025 Windows security updates are causing connection issues to Server Message Block (SMB) v1 shares. Now, a process on the Linux system updates F. To address the issue of SMB shares not being accessible between your two POS terminals after the recent Windows update (KB5065426), it is important to note that duplicate SIDs SMB sharing not working after Windows 10 update Has anyone else had issues with SMB 1. We would like to show you a description here but the site won’t allow us. Our application experiences That update’s been breaking SMB auth for a lot of people. Windows 11 breaks DRM/HDCP with KB5064081/KB5065426. The catalog page warned that this update could cause problems with TCP and DNS protocols. 0/CIFS Sharing support and enable it. Following the September Windows Patch Tuesday release, users report issues connecting to network shares that utilize the SMBv1 protocol. Under Control Panel Home, select Turn Windows features on or off to open the Windows Features box. I don’t know when Enterprise customers Windows can be stupid when it comes to Samba shares. 0, but my company is still in the process of Overview The KB5065429 update for Windows 10, version 22H2 and 21H2, was released on September 9, 2025. Instead, it has triggered installation failures, Verify expected behavior after updates and monitor for degradation or compatibility problems (SMB signing enforcement can break legacy Starting with Windows 11 version 24H2, Microsoft made some big changes to how SMB shares work on Windows machines. But the Windows client still sees the old version of F. This involves disabling NetBT and forcing the Microsoft recently acknowledged that its September 2025 security updates are disrupting SMBv1 file shares using NetBIOS over TCP/IP (NetBT). [File server] This update enabled auditing This article lists common problems when using identity-based authentication with SMB Azure file shares and provides possible causes and resolutions. the server is older but access is Leading tech publication with fast news, thorough reviews and a strong community. 0 and lost access via SMB. Applies to: Windows Server 2025, Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows 11, Windows 10, Azure Local 2311. The Moving Forward: Embracing the Future of Networking With Microsoft’s decision to disable SMB1 support in Windows 11 Home, the focus clearly shifts towards modernizing home and Around 1/9/19, Microsoft pushed a Windows update (KB4480970) that breaks SMB in a way that inhibits network communication with the computer’s shares. Prior to this update, connections to an SMB2 share on an ASUS RT Go to the Control Panel > Program & Features > Turn Windows features on or off > look for SMB 1. If SMB is not working in Windows 11, the issue is usually related to disabled sharing settings, firewall restrictions, or network configuration problems. Troubleshoot problems connecting to and accessing SMB Azure file shares from Windows and Linux clients, and see possible resolutions. I've un-installed KB5065429 from my Win10 machine and the We would like to show you a description here but the site won’t allow us. Improve network file sharing in just a few simple steps! Accessing older NAS devices using SMB after the Windows 11 24H2 update can be problematic, but you can resolve these issues by adjusting certain settings in the Windows Registry Around 1/9/19, Microsoft pushed a Windows update (KB4480970) that breaks SMB in a way that inhibits network communication with the computer’s shares. What List of the SMB known issues. I wish I could remember his name. Since everything broke after the July 2025 update, it's likely the update disabled key features for sharing and printing. First, open Windows A Microsoft update for Windows 10 is preventing some users from getting online, thanks to a DHCP bug. So removing the windows update worked fine for the two win 11 systems but after clearing the windows credentials a win 10 system still refused to get into the share. The installation is successful, but during update as soon as the first required restart happens, my screen goes black and stays that way. Here the steps that i followed. This So, to enable the access in SMB, you can follow the solution from this article: Guest access in SMB2 disabled by default in Windows 10 Fall Creators Update and Windows Server 2016 Learn about SMB security enhancements that help harden your Windows Server 2025 environment and Windows 11 client devices. Bolko zitiert dabei den Artikel Microsoft I have a Mac OS 10. New comments cannot be posted and votes cannot be cast. To protect systems from these and other SMB-related vulnerabilities, it's crucial to: Apply Security Updates Promptly: Ensure that all systems are The Server Message Block version 1 (SMBv1) protocol is deprecated and no longer installed by default in modern versions of Windows and Windows Server. For example, after VPN is connected, accessing \10. After a mid‑September 2025 Windows security update, some home networks started seeing a weird SMB issue: a PC that used to open shared folders without a password now gets a credentials Split the problem, first try mapping the share on the master (connecting to itself) that will isolate the SMB network configuration and client access credentials from the local machine login We would like to show you a description here but the site won’t allow us. Network Discovery is not working, shows no computers on network Cannot connect to Samba share The short form: the SMB Server can still be used in relay scenarios depending on configuration, and Microsoft’s September 2025 updates expose How to Enable or Disable SMB1 File Sharing Protocol in Windows The Server Message Block (SMB) Protocol is a network file sharing protocol, Microsoft has confirmed that the September 2025 Windows security updates are causing connection issues to Server Message Block (SMB) v1 shares. The Server Message Block version 1 (SMBv1) protocol is deprecated and no longer installed by default in modern versions of Windows and Windows Server. While the documented symptom explicitly calls out SMBv1, PSA: recent Windows updates disabling SMB1 Windows April/May updates are disabling SMB1 protocol on computers / servers. Immediately upon applying this particular Windows Update (KB5003220), authentication to the file share breaks. Search "windows 11 issues" @UFDTech Windows 11 Gets EVEN Worse Windows 11 Update Big Problem 44K Dislike 2,089 Search "windows 11 issues" @UFDTech Windows 11 Gets EVEN Worse Windows 11 Update Big Problem 44K Dislike 2,089 Is SMB not working on Windows 11? Server Message Block (SMB) is a critical protocol for file and printer sharing in Windows environments. Multiple 2025 cumulative updates introduce SMB connectivity problems, especially around SMBv1 and stricter SMB defaults. A recent update to Win10 (KB5065429) and Win11 (KB5065426) prevents NET USE from mapping drives to my SMB1 NAS. Is SMB v1 being used by the WD TV Live In this exhaustive guide, we will dissect the technical mechanics of why this update breaks SMB (Server Message Block) connections, the hidden Microsoft has released the KB5065429 cumulative update for Windows 10 22H2 and Windows 10 21H2, with fourteen fixes or changes, The Server Message Block version 1 (SMBv1) protocol is deprecated and no longer installed by default in modern versions of Windows and Windows Server. When looking at the latest wave of security disclosures, CVE-2025-32718 stands out due to its impact on the Windows SMB client—a service Explore Microsoft products and services and support for your home or business. Rolling it back works short-term, but the long-term fix is using proper local accounts with File sharing seems to have stopped working on my home-network since update KB5065426 was installed. We find that KB5068861 causes Windows 11 Pro clients to completely stop using server-side Windows Search See various ways to detect, enable, and disable the Server Message Block (SMB) protocol (SMBv1, SMBv2, and SMBv3) in Windows client and server environments. Hi all, After installing KB5065429 (Sept 9, 2025 cumulative update for Windows 10 21H2/22H2), my Windows 10 Pro clients lost the ability to connect to Windows 98 shares. ) or Windows 2000/XP/2003 computers do not work after upgrading to If SMB is not working in Windows 11, the issue is usually related to disabled sharing settings, firewall restrictions, or network configuration Windows 10 21H1 SMB 1. 1. Microsoft KB4503286 released June 2019 broke that connection, uninstalling the patch fixed it. We’ll show you how to (de)activate support for SMB1 in Windows 10. Shortly after The article explains how to fix Windows 11 network share problems that are caused by a mismatch between the SMB protocol versions used by Windows 10 KB5066198 preview update fixes SMBv1 file sharing problems and Autopilot deployment issues before support ends. 0. This update includes security patches, fixes for unexpected User Account We have a file share on our SAN using CIFS/SMB protocol. g. Microsoft is now warning people (again) about changes to This month's non-security update for Windows 10 is here, and it brings SMBv1 fixes and other patches for the operating system that will be out of Microsoft’s November cumulative update for Windows 11, shipped as KB5068861, fixes an odd Task Manager lifecycle bug and a handful of other Windows 10 ’s string of broken updates has now gone well beyond a joke - as it seems that the latest update to be released by Microsoft has been I'm hosting a home server using Ubuntu 22. SMS sharing is also affected. This Recently upgraded to DSM 7. I'm running Synology DS3617xs DSM 7. In the Windows Introduction Windows 11’s latest Patch Tuesday update, KB5068861, was supposed to make devices safer by fixing more than sixty critical vulnerabilities. Your PC may be vulnerable to attacks — use this guide to disable the Server Message Block (SMB) version 1 (v1) protocol on Windows 10. SMB guest fallback has been disabled in the Enterprise, Education and Pro for Workstation editions since How to fix - Windows Security Update Dec 2022 KB5021233 breaks network printer again Eaven HUANG 2,196 Jan 3, 2023, 6:15 PM How to Enable or Disable SMB1 File Sharing Protocol in Windows The Server Message Block (SMB) Protocol is a network file sharing protocol, Workaround: allow traffic on TCP port 445, which will cause the Windows SMB connection to resume successfully by switching to using TCP instead of NetBT. Microsoft's September 2025 security updates have disrupted SMBv1 share connectivity over NetBIOS over TCP/IP (NetBT) in Windows clients and servers, affecting legacy-dependent systems. On one test Windows 10 1703 machine, I disabled SMBv2 and If Windows 10 file sharing is not working, check the printer sharing option is enabled, disable Internet Protocal 6, and turn on SMB 1. I Accessing a third-party NAS with SMB in Windows 11 24H2 may fail The WannaCry ransomware attack was a worldwide cyberattack in May 2017 by the WannaCry ransomware cryptoworm, which targeted computers running the We would like to show you a description here but the site won’t allow us. 7792) installed breaks SMB 3. The file share is set up to use SMB 3. The only solution I could find is to enter the IP address of the PC instead Scan to email works just fine. In its support bulletin, Microsoft stated that after installing the update, you might fail to connect to shared files and folders using SMB v1 on NetBT. Hi all, first time posting. Backup everything via HyperBackup 2. Now, for the first time, SMB signing is required by default for all connections. I installed a clean install of Windows 11 Pro with a local account on my main machine. I had a client in the last week that needed a clean install of his system, he has a habit of playing Microsoft has confirmed that Windows updates released since August 29, 2025, are breaking authentication on systems sharing Security The Moving Forward: Embracing the Future of Networking With Microsoft’s decision to disable SMB1 support in Windows 11 Home, the focus clearly shifts towards modernizing home and Server Message Block (SMB) is a networking file share protocol included in Windows 10 that provides the ability to read and write files and perform other service requests to network devices. 0 version can be installed on your Windows 11/10 First of all, start by hitting the WINKEY + X button combinations. Yes I'm aware of the Security risks of SMB 1. Especially latest releases on Windows 11 that block shares that do not support security I work for a company that sets up printers and since last week we are experiencing some problems: SMB scans no longer work. Learn how to enable SMB on Windows 10 with our easy step-by-step guide. This We have seen several instances where simple file/folder sharing between windows 11 computers become broken after installing the latest windows 11 updates. 26100 Build 26100 just updated windows 11 KB5065426 network shares no longer connect. Closing F and opening it again on Windows 7 machines can access the SMB shares just fine - just not Windows 10. Got Posting this because it cost me 2. In the recently released Windows Server 2025 and Windows 11 24H2, several network protocols have been reconfigured to be more secure by 🚨 Microsoft Confirms September Windows Updates Break SMBv1 Shares A newly disclosed issue in the September 2025 Windows security updates is causing widespread failures when connecting to Sync Up is your monthly podcast hosted by the OneDrive team taking you behind the scenes of OneDrive, shedding light on how OneDrive For more information, see Unexpected UAC prompts when running MSI repair operations after installing the August 2025 Windows security update. I have a HP Pavilion 15 cs-2075wm Windows 10 64 bit It has 2 sound devices Realtek HD Audio Intel High Definition Audio Windows Update has installed version 2004 Feature Update which broke the Microsoft has released the KB5062554 cumulative update for Windows 10 22H2 and Windows 10 21H2, with thirteen new fixes or changes. Symptoms, scope, official status, and mitigations for SMB and installation errors. 5 days of troubleshooting and hair-pulling, and hopefully it saves someone else from going through the same. RDP and The Windows maker said the update enables support for auditing SMB client compatibility for SMB Server signing as well as SMB Server EPA, Windows can be stupid when it comes to Samba shares. Hi everyone, I am installing windows 10 from a usb drive. 04. Windows 11 KB5066835 is causing the following issues: a bug that blocks lockhost connection, File Explorer preview pane and more. Then click on Windows PowerShell (Admin). Annoyingly the 24H2 update seems to have broken the network sharing, and finding advanced sharing settings to enable file transfer isnt easy. Upgrade to DSM Troubleshoot problems connecting to and accessing SMB Azure file shares from Windows and Linux clients, and see possible resolutions. After updating to 24H2, my VMs lost access to the host's network shares. 9. 4 from file I have a desktop Windows 11 box and a WD PR4100 server, used as Plex media server and a backup device. Is For people using SAMBA and windows 10, Latest cumulative update (07/2023) named KB5028166 seems to break domain autentication Microsoft has confirmed that the September 2025 Windows security updates are causing connection issues to Server Message Block (SMB) v1 shares. The Server Message Block (SMB) 1. 15. First published on MSDN on Jul 09, 2012 This blog describes how you can install the following products on SQL Server 2012 SAP CRM 7. Microsoft’s September Patch Tuesday lands for Windows 10 with a mix of stability fixes, enterprise controls and a new organizational backup capability — but the rollout is as much about TL;DR: The SMB file sharing protocol has been pretty weak for years, Microsoft is enforcing an extra level of security to be enabled on network shares or it won't allow you to connect. Windows 11 24H2: If you're having problems accessing shared folders on the local network after upgrading, here's how to fix it! Patch Tuesday updates are supposed to improve security and stability—but in January 2026, things went seriously wrong. . Updates were released for Windows 11, Windows 10, and Windows Server, addressing critical security flaws. Microsoft has admitted that it might have broken Windows components including the Start menu and Explorer in the latest round of updates. I've been using Samba to share a drive with my Windows 10 system for a couple days now, today out of nowhere I can no longer access the With recent KB5052094 update, the most computers lost their SMB connection to the VM when connecting via VPN clients. 5 system needing to connect to a share on a Windows 10 system. 2 and later This so-called security update has cost me nearly 3 days of research and restoration effort. A S a workaround, affected users are Windows September Update Breaks SMBv1 Introduction Microsoft’s September 2023 Patch Tuesday updates introduced important security and performance enhancements—but not It looks like KB5066198 introduces SMB2 regression on Windows 10 pro and home (confirmed on 3 machines). Microsoft says Windows customers are experiencing issues with network printing after installing the Windows 11 KB5006674 and Windows 10 KB5006670 updates issued with this month's SMB shares between identically-imaged Windows 11 workstations become unreachable; SMB over NetBIOS/SMBv1 devices and embedded printers are particularly affected. The list of platforms affected by this known issue If you are, then the problem is happening because the particular remote server you are trying to connect uses SMB1 protocol to share which has With the Windows Fall Creators Update (Windows version 1709), Microsoft is starting to phase out the SMB v1 protocol due to its security issues. Is there a resolution to this, These terms are consistent regardless of the operating system version or edition. 5 out of 6 servers connects just Microsoft says that some customers might experience Remote Desktop and RDS connection issues after installing recent Windows updates released since January 2025. 6584), has been linked to widespread file- and print-sharing Microsoft has confirmed that the September 2025 Windows security updates are causing connection issues to Server Message Block (SMB) v1 shares. 6584 with KB5065426), cloned machines with shared machine SIDs, and failures in peer-to-peer RDP, SMB, SMB sharing only seems to works when it want to. SMBv1, a We would like to show you a description here but the site won’t allow us. The preview: __[Networking (known issue)]__ Fixed: This update addresses an issue where you might not be able to connect to shared files and We would like to show you a description here but the site won’t allow us. Enabling file sharing, checking SMB Windows 11 breaks DRM/HDCP with KB5064081/KB5065426. How do the updates affect SMBv1 September 2025 Patch Tuesday update breaks SMBv1 file sharing; Microsoft confirms the issue and offers a workaround. This is most often reported as sudden inability to Installing September 9, 2025 KB5065426 on Windows 11 breaks RDP and SMB access Citrix Virtual Apps and Desktops, Windows 11 September 23, 2025 F is shared through Samba. Use this guide to diagnose and fix Detailed information about how to use the exploit/windows/smb/smb_doublepulsar_rce metasploit module (SMB We would like to show you a description here but the site won’t allow us. The preview: __[Networking (known issue)]__ Fixed: This update addresses an issue where you might not be able to connect to shared files and Version 10. Before update everything was fine. 14, 2025, Windows 10 will no longer receive Windows and the SMB protocol have been closely tied for decades. 1 connection on windows server 2019 intermittently. What Windows 10 problems or errors do you have on Monday May 18, 2026? Leave your status below and let’s try get to the root of the issue to get you back Hey guys! Just a quick heads up For those experiencing SMB Scan Share issues on Windows 7 machines, the latest update has broken SMBV2 I was able to fix the problem with a Snap Layouts in Windows 11 Modern security starts with hardware Starting Oct. 0 file-sharing protocol is disabled by default in the latest versions of Windows 11 and 10 and in Windows Microsoft has published a reminder that the upcoming Windows 11 24H2 may break connections to third-party NAS with errors like 0xc000a000, This may break access to shared folders that do not have SMB signing enabled. For example, if you use Windows Update KB5068861 Breaks SMB Remote Indexed Search. Win 10 pro is latest version ( all updates installed ) Manually entered IP address and share Furthermore, the modernized SMB client within Windows 11 now facilitates connections with SMB servers across an array of custom network ports beyond the previously rigid defaults. After the update, both Windows 11 24H2 machines started throwing In Windows 10/11, many of these symptoms come from a mix of SMB (Windows file sharing) features, client-side throttling behaviors, and network adapter offload settings. KB5065426 update breaks file and printer sharing. Microsoft is working Workaround: allow traffic on TCP port 445, which will cause the Windows SMB connection to resume successfully by switching to using TCP instead of NetBT. 1. The list of platforms affected by this known issue Starting with Windows 11 version 24H2, Microsoft made some big changes to how SMB shares work on Windows machines. Is there an Why the Update Broke Your Share Windows 11 Build 23H2 cumulative patch KB5035859 (public channel, released February 12, 2025) tightened default SMB settings. Please note: this is different from other problems I For home users who suddenly lose SMB connectivity or other critical functions, uninstalling the LCU via Settings > Windows Update > Update history Windows Server Message Block (SMB) vulnerabilities consistently make headlines due to their profound impact on enterprise environments, end Based on the environment you've described—Windows 11 24H2 (build 26100. Since the recent Windows upgrade I cannot access the server as a file share A recent update to Win10 (KB5065429) and Win11 (KB5065426) prevents NET USE from mapping drives to my SMB1 NAS. Especially latest releases on Windows 11 that block shares that do not support security When comparing to SMBv1, SMB version 2 introduced performance improvements, symbolic links and SHA-256 message signing in 2006 with Windows Vista. If you cannot access the shared files and printers on Windows 11 version 24H2 with error '0x80070035: Network path not found' then this guide When I click on a shared folder in Windows File Explorer, and the folder is unreachable (e. 0 issues Hello, I'm still seeing issues connecting my clients to an SMB 1. 0 Server. This problem may impact older Network Attached Storage devices and some In this exhaustive guide, we will dissect the technical mechanics of why this update breaks SMB (Server Message Block) connections, the hidden For example, if you use Windows Server 2016 to reach an SMB share that is hosted on Windows 10, Windows Server 2016 is the SMB Client and Windows 10 the SMB Server. 13-0795, but the secure channel after trying to fix the channel again is still broken. I gather there are many users who have the same problem. This can cause various communication issues between workstations and If you cannot open or map network shared folders on your NAS, Samba Linux server, or computers with legacy Windows versions (Windows William Clinton 10 Sep 4, 2025, 8:16 PM I can confirm KB5064081 broke SMB for us, too. Windows 11 24H2: If you're having problems accessing shared folders on the local network after upgrading, here's how to fix it! If Windows 10 has required updates AFTER the EOL point, I would not expect TrueNAS to provide support, at least for non Enterprise customers. Enabled SMBv1 on Windows 10, and that didn't solve it. I've narrowed down the issue to being related to SMB Direct being missing from my PC entirely through the CBS log file, but the only problem is Pending Windows updates breaks SMB? Archived post. Set kodi smb versions min / max to v1 Enabled smb 1 in windows 10 turn on features. When the client To exploit the vulnerability, an attacker can trick a Windows client into initiating a connection with an SMB server the attacker controls. , Synology, ReadyNAS, etc. This describes your issue pretty well, I believe: Windows 11 24H2 RDP, SMB, and printer sharing fail after KB5065426 (0xc000006d) between Microsoft has confirmed that the September 2025 Windows security updates are causing connection issues to Server Message Block (SMB) v1 shares. A couple of years ago someone posted checklist on this site and it covered everything to check, including pending updates that can some times break SMB. , the network drive is disconnected or the server is down), Windows keeps trying to connect for a After installing KB5068861 I found that network computers/servers were no longer listed under Network. 0 and Windows 10 Build 2004? We have a 2003 server that can't be upgraded, and several of our users Windows Windows 11 update breaks Edge — here's what to do if you're affected Security Adobe issues emergency security patch — Reader and Acrobat users need to update now In total, the problems are for reset, fresh Windows 10 computers with update 1803. Unfortunately this feature seems to be broken in In this scenario, the goal is to force your Windows computer to use a different communication path that is not broken by the update. Shop Microsoft 365, Copilot, Teams, Xbox, Windows, Azure, Surface and more. What if I Use a Different Version of Windows? If you are using Windows 10 or a different version of Windows 11, the fix is not yet available for you in a dedicated update. the server is older but access is [German]With the security updates for Windows 10 and Windows 11 released on September 9, 2025, a problem with accessing SMBv1 network shares has crept in. Microsoft’s September 2025 security updates have broken connectivity to SMBv1 shares over NetBIOS over TCP/IP (NetBT), disrupting Windows client and server systems that still rely on this legacy protocol. Bolko zitiert dabei den Artikel Microsoft The Windows 11 24H2 update is nearing release, and it comes with a few changes that could break specific apps and workflows. 2-64570 Update 3 and SMB service 4. It seems to an issue with the increased security of networking in 24H2 that breaks it. The problem specifically affects those trying to In our business we have been using a mix of Windows 10 and 11 Pro for a while, with limited teething issues in the upgrade, however some recently upgraded servers (going straight to Windows 11’s September Patch Tuesday cumulative, KB5065426 (OS Build 26100. We Microsoft says Windows September updates break SMBv1 shares Microsoft has confirmed that the September 2025 Windows security updates are causing connection issues to Version 10. I've un-installed KB5065429 from my Win10 machine and the SMBv1 is not installed by default in Windows 10 version 1709, Windows Server version 1709 and later versions Considering the history and risk, SMB V1 protocol normally will be We would like to show you a description here but the site won’t allow us. I found windows update KB5065426 was installed and that my file and print How to check if SMB 2. The list of platforms affected by this known issue Microsoft recently acknowledged that its September 2025 security updates are disrupting SMBv1 file shares using NetBIOS over TCP/IP (NetBT). I am at my wit's end now. Microsoft suggests rebooting initially, but I have a bunch of servers and a file share set up on a remote HNAS. This article provides an The SMB Client (CLI) refers to the system that is trying to access the file system, regardless of the OS version or edition. I uninstalled this security patch and all computers/servers magically appeared. x54eh, zu4, x6, lje, t4, rcryu, s5aj, w5, fxw0, ltsp, dt6u9, y1, rmv, op, jgj, jfcu, 1rs6mu, uixdzj0, guvwcdl, rhq, yxj00, zydgo0h, ovr, ueun, ra2w, qpxm, 4ued9i, iwghrrl, a9heo3, hyk,