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- Disable SMBv3 compression
- You can disable compression to block unauthenticated attackers from exploiting the vulnerability against an SMBv3 Server with the PowerShell command below.
- Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters" DisableCompression -Type DWORD -Value 1 -Force
- Notes:
- No reboot is needed after making the change.
- This workaround does not prevent exploitation of SMB clients.
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