Using PowerShell to get a list of shares from a server

This one is relatively easy on first glance.

$shares = Get-WmiObject -ComputerName SERVERNAME -class win32_Share

The win32_Share class gets the shares as listed by WMI. From here normally you can get the permissions fairly easily. Except in a case like this:

Name Path Description
---- ---- -----------
ADMIN$ C:\Windows Remote Admin
C$ C:\ Default share
E$ E:\ Default share
F$ F:\ Default share
G$ G:\ Default share
\\SERVER-MSDTC\M$ M:\ Cluster Default Share
H$ H:\ Default share
IPC$ Remote IPC
\\SERVERSHR-CLS\ClusterStorage$ C:\ClusterStorage Cluster Shared Volumes Default Share
M$ M:\ Default share
\\SERVERSHR-CLS\Q$ Q:\ Cluster Default Share
O$ O:\ Default share
\\SERVERSHR-SQL\F$ F:\ Cluster Default Share
Q$ Q:\ Default share
\\SERVERSHR-SQL\G$ G:\ Cluster Default Share
\\SERVERSHR-SQL\H$ H:\ Cluster Default Share
LogFiles C:\Program Files\Microsoft SQL Server\MSRS11.RPT\Reporting Services\LogFiles
\\SERVERSHR-SQL\bin F:\\bin
\\SERVERSHR-SQL\O$ O:\ Cluster Default Share
\\SERVERSHR-SQL\Files2 F:\Files2
\\SERVERSHR-SQL\Files3 H:\Files3

If we were looping through trying to do something like this on each share

$ShareSec = Get-WmiObject -Class Win32_LogicalShareSecuritySetting -ComputerName $($ServerReportingOn.DNSHostname) -Filter "Name='$sharetocheck'"

We’d get errors that would look like this.

+ ... $ShareSec = Get-WmiObject -Class Win32_LogicalShareSecuritySetting -C ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Get-WmiObject], ManagementException
+ FullyQualifiedErrorId : GetWMIManagementException,Microsoft.PowerShell.Commands.GetWmiObjectCommand

The solution is simple. Notice how all the cluster shares start “\\”? In your loop to get the permissions you would check the share name for “\\” and skip that “Get-WmiObject -Class Win32_LogicalShareSecuritySetting” line for any share name starting with it.

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