smb2

About this tag
The smb2 tag covers discussions about the Server Message Block Version 2 (SMB2) protocol, particularly in Windows 7 and Windows Server 2008 R2 environments. Topics include troubleshooting stop errors like 0x000000D1 and 0x0000007E in SMB2 environments, issues with SMB2 directory cache not updating correctly under heavy load, and problems renaming or saving to DFS shares when SMB2 is involved. The tag also includes coverage of the Linux kernel's ksmbd SMB server, specifically a CVE-2026-23220 fix for an infinite loop denial-of-service bug. These threads provide practical fixes, hotfix references, and technical details for administrators managing SMB2 deployments.

  1. CVE-2026-23220: Linux ksmbd Fix for Infinite Loop DoS in SMB Server

    A subtle pointer-reset bug in the Linux kernel's in‑kernel SMB server, ksmbd, has been assigned CVE‑2026‑23220 and fixed upstream; left unpatched the defect can cause the server to loop indefinitely while repeatedly reprocessing the same failed request, flooding logs and driving CPU usage to...

  2. "The file or folder does not exist" when renaming or saving to DFS share from a Windows 7 computer

    This problem can occur when connecting from Windows 7 to a Windows Server 2008 R2 DFS share, or to NetApp's Data ONTAP 8.1 (SMB2 server) product.After "net use z: \\ipaddr\SHARENAME " to DFS folder, if name resolution fails to the server name who... More...
    • News
    • Thread
    • data ontap dfs error message file management name resolution netapp network storage smb2 windows 7 windows server
    • Replies: 0
    • Forum: Knowledge Base (KB)

  3. SMB2 directory cache is not updated correctly if a file is deleted in Windows 7 or in Windows Server

    Fixes an issue in which the SMB2 directory cache is not updated correctly if a file is deleted on a computer that is running Windows 7 or Windows Server 2008 R2. This issue may occur if the computer is under heavy load. More...
    • News
    • Thread
    • cache directory file deletion heavy load issue fix smb2 support update windows 7 windows server
    • Replies: 0
    • Forum: Knowledge Base (KB)

  4. Stop error "0x000000D1" or "0x0000007E" in an SMB2 environment in Windows 7 or in Windows Server 200

    Fixes some Stop errors that occur in a Server Message Block Version 2 (SMB2) environment on a computer that is running Windows 7 or Windows Server 2008 R2. More...
    • News
    • Thread
    • environmental error fix kb article smb2 stop error support troubleshooting windows 7 windows server
    • Replies: 0
    • Forum: Knowledge Base (KB)