Steps:
1. Run "regedit" on Windows Server 2008 based computer.
2. Expand and locate the sub tree as follow.
HKLM\System\CurrentControlSet\Services\LanmanServer\Parameters
3. Add a new REG_DWORD key with the name of "Smb2" (without quotation mark)
Value name: Smb2
Value type: REG_DWORD
0 = disabled
1 = enabled
4. Set the value to 0 to disable SMB 2.0
5. Reboot the server.