Cannot Access XP from Windows 7/8 after updating windows update MS17-010

Discussion in 'Windows 7 Networking' started by yusufks, May 19, 2017.

  1. yusufks

    yusufks New Member

    May 19, 2017
    Likes Received:
    Hello guys...!

    We use various OS such as Windows XP, Windows 7, Windows 8 in our office. In the beginning there's no networking problem, Windows XP can access to higher Windows, and Windows 7/8 can access Windows XP. Everything's fine until installing windows update MS17-010 on last Monday for more secure againts Ransomware outbreak.

    Windows Update we installed :
    1. Windows XP : kb4012598
    2. Windows 7 : kb4012212 and kb4012215
    3. Windows 8 : kb4012213 and kb4012216

    After installing the Windows update, these problems occur :
    1. Windows XP cannot access Windows 7/8 through \\computername or \\ipnumber\foldername, cannot access file sharing and printer sharing
    Error message: "Windows cannot find [\\computername\] ....."

    2. Windows 7/8 cannot access Windows XP through \\computername or \\ipnumber\foldername, cannot access file sharing and printer sharing
    a. Error message (when access updated XP) : diagnose : "The remote device or resource won't accept the connection"

    b. Error message (when access non-updated XP) : just usual "Windows cannot access [\\computername\]", no diagnose message.

    This is what I've got and done :
    1. Ping computername or ipnumber from command prompt is no problem. Windows XP can ping Windows 7/8, vice versa.

    2. Windows 7/8 that have not been installed windows update still can access any Windows XP

    3. Any Windows XP still can access Windows 7/8 that have not been installed windows update.

    4. Any Windows 7 can access any Windows 8, and vice versa.

    5. Any same Windows can access each other (Windows XP to Windows XP, Windows 7 to Windows 7)

    6. Windows 7: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\LanmanServer\Parameters
    I changed SMB1 value from 0 to1, but the value back to zero after restarting.

    7. Windows 7 : Local Computer Policy > Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options > Network security: LAN Manager authentication level
    I changed value to "Send LM & NTLM responses", but still nothing changed.

    8. Windows Firewall setting and workgroup name are nothing changed just like before installing update.

    I need many hands to solve this problem, thank you :)

    #1 yusufks, May 19, 2017
    Last edited: May 20, 2017

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