Microsoft’s September 2025 Update: When Old Tech Meets New Troubles – SMBv1 Strikes Back!
Microsoft confirms September 2025 Windows updates are causing connection issues with SMBv1 shares. Affected platforms include Windows 11, Windows 10, and Windows Server. The issue occurs with NetBIOS over TCP/IP. Microsoft offers a temporary fix while working on a permanent solution, reminding users of the longstanding security risks with the outdated SMBv1 protocol.
Hot Take:
Who would have thought that a 30-year-old protocol known for its security issues would cause trouble? It’s like trying to surf the web using dial-up and a Netscape browser. The only surprise here is that SMBv1 didn’t come back with a MySpace account and a demand for AOL CDs. Microsoft, it’s time to let it go, just like your collection of Windows Vista installation discs.
Key Points:
– September 2025 Windows security updates are causing connection issues with SMBv1 shares.
– Affected platforms include Windows 11, Windows 10, Windows Server 2025, and Windows Server 2022.
– The issue occurs when using SMBv1 over the NetBIOS over TCP/IP protocol.
– Microsoft suggests allowing TCP port 445 traffic as a temporary workaround.
– SMBv1, superseded by SMBv2 in 2007, is no longer installed by default and is being phased out due to security vulnerabilities.