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“mount” command using CIFS protocol does not mount Windows 2008R2 / Windows Vista partitions – STATUS_INVALID_PARAM


When upgrading an Active Directory Domain to Windows 2008R2 the “mount” command does not work when an ubuntu machine tries to mount a partition on a remote Windows server. This problem occurs because of an additional security check [1] in Windows Server 2008 and in Windows Vista.


instead of using:

mount -t cifs //<ip_address>/dir_to_mount /mnt/directory -o user=USERNAME,password=PASSWORD,domain=DOMAINNAME


mount -t cifs //<ip_address>/dir_to_mount /mnt/directory -o user=USERNAME,password=PASSWORD,domain=DOMAINNAME,sec=ntlmv2


[1] – | MS KB #957441 – Client connections return a “STATUS_INVALID_PARAM” error code when you use a “Send NTLMv2 response only” authentication level in Windows Server 2008 or in Windows Vista


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