Powershell use Invoke-command to check a file existence on remote server and out-file to a txt file on shared folder failed

Anson R C XUE 1

Hi there.
I have a script to check a file existence on remote server and out-file to result to a txt file on shared folder, but it failed with access denied error.

Foreach ($name in $serverlist)
{
$Session = New-PSSession -ComputerName $name
Invoke-Command -Session $Session -ScriptBlock {
if ((Test-Path "c:\test.txt") -eq "True")
{
Write-Output $name "file exists" >> "\server\shared folder\result.txt"
}
else {
Write-Output $name "file not found" >> "\server\shared folder\result.txt"
}
}
}

The error is "Access to the path \server\shared folder\result.txt" is denied. however i have verified the permission, the user which runs this script was granted full permission on the shared folder.

Can anyone help to advise what's going wrong?

Thanks.

Anson R C XUE 1 Reputation point

2021-02-05T03:53:11.167+00:00

I am pretty sure that no issue with the permission, as when i run the command Write-Output "file not found" >> "\server\shared folder\result.txt" on the remote server, it's working fine.

1 answer

Ian Xue 38,631 Reputation points Microsoft Vendor

2021-02-05T06:42:12.32+00:00

Hi,

You have to enable the second hop.

This link could be helpful.
Enable PowerShell "Second-Hop" Functionality with CredSSP

Best Regards，
Ian Xue

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Anson R C XUE 1 Reputation point

2021-02-05T07:50:04.447+00:00

Thanks Ian, it is helpful.
But how can I use pass the credential to the remote servers without prompting up for username and password?
I tried in my lab environment, it was asking for username/password which is against my requirement - what i want is to use the credential of the logged on user.
Could you please further advise? thanks.

Ian Xue 38,631 Reputation points Microsoft Vendor

2021-02-05T09:01:55.807+00:00

You can store your credential in a PSCredential object

$username = "username" $password = "password" $securePassword = ConvertTo-SecureString $password -AsPlainText -Force $credential = New-Object System.Management.Automation.PSCredential $username, $securePassword Invoke-Command -ComputerName $name -Credential $credential -ScriptBlock {...}

Anson R C XUE 1 Reputation point

2021-02-05T09:11:35.033+00:00

actually the script is part of my automation - the password will be stored in a scheduled task, and it will be rotated every 7 days due to security requirement.
Is there any way to pass the password stored in the scheduled task to the remote server without human interaction?
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Powershell use Invoke-command to check a file existence on remote server and out-file to a txt file on shared folder failed

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