Identifying the process or user that has a lock on a folder or file

Question

In Windows Server 2008, it was easy to identify the user that had a lock on a folder or file. As a last resort, you could always log off that user to release a lock.
In Windows Server 2012 R2, as far as my limited understanding, it is more difficult to identify which user or process has a lock on a folder or file. Is there a MS or third party technique or tool to achieve this?
I looked at the third party tool called Unlocker, but I think that that does not work on network drives.
Many thanks.
Keith
R K Howard

Answer 1

Hi Keith,
This is bit difficult in GUI.
As mentioned by Mandy, try powershell
Use below to get all the open files:
Get-SMBOpenFile | flFileId              SessionId           Path                ShareRelativePath   ClientComputerName  ClientUserName
4415226382229       4415226380377       C:\ClusterStorag... VM4\Virtual Mach... 192.168.102.14      Contoso\Contoso-HV2$
4415226382237       4415226380385       C:\ClusterStorag... VM4\VIRTUAL MACH... 192.168.102.14      Contoso\Contoso-HV2$
Identify the interested path and note the 'FileId', ClientComputerName (Is the user Workstation IP)
Use below cmdlet to identify if Locks(1) is Enabled on that path not.
Get-SmbOpenFile -FileId 4415226383569 | Select-Object -Property *ClientComputerName    : 192.168.102.14
ClientUserName        : Contoso\Contoso-HV2$
ClusterNodeName       : Contoso-FS2
ContinuouslyAvailable : True
Encrypted             : False
FileId                : 4415226383569
Locks                 : 1
Path                  : C:\ClusterStorage\Volume2\VMS\VM4.VHDX
Once you find the correct FileId, use below command to ping and find the workstation name having the Lock,
ping -a <IP address>
There are few more cmdlets that you might be interested in.
Get-SMBConnection | fl
Get-SMBSession | fl
References:
Get-SmbOpenFile
http://technet.microsoft.com/en-us/library/jj635701.aspx
Regards,
Satyajit
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