Help executing a batch file on a remote PC using Powershell (PSRemote)

Good Morning Powershell Experts,

I have been asked to uninstall all old versions of Adobe Flash and install the newest version on several hundred PCs.  I’ve read about doing this with a GPO or through SCCM (we use SCCM 2007), but I have not been successful with either of these options.  The cleanest way I have found to do this is using the following script (named AdobeFlashInstall.cmd):

taskkill /f /t /im iexplore.exe
pushd "\\netapp3140a\sccmdata$\sources\apps\AdobeFlashPlayer"
Uninstall_flash_player.exe -uninstall -force
Install_flash_player_11_active_x.msi /QB!

What I would like to do is use Powershell to launch the AdobeFlashInstall.cmd script on the remote PCs.  

To see how well this would work, I’m trying to initiate a remote launch of the AdobeFlashInstall.cmd script on one of my test machines.  The Powershell command I’m using is as follows:

Invoke-command –ComputerName TestPC1 –ScriptBlock {Start-Process “\\Server1\SharedApps\Adobe\InstallAdobeFlash.cmd”} –credential mydomain\nick

When I run the command above, I’m prompted for my password, which I enter, and then I get the following error:

This command cannot be executed due to the error:  Access is denied.
      + CategoryInfo            : InvalidOperation: (:) [Start-Process], InvalidOperationException
      + FullyQualifiedErrorID : InvalidOperationException,Microsoft.Powershell.Commands.StartProcessCommand
      + PSComputerName      : TestPC1

I have verified PSRemoting is enabled and working on the test machine using the following command:

Invoke-command – ComputerName TestPC1 –ScriptBlock {Get-Process} –credential mydomain\nickd

The above command works.

I have verified that everyone has access to the share on the server.  I have also added domain computers to have access on the share.  I have tested this by accessing the share from my PC and one of my other test PCs without any issues.  Any ideas on what I’m doing wrong?

As always, thanks in advance for your help.

Who is Participating?
When accessing remote shares from within a remote PS session, you will need to use credssp.  Basically the reason you're getting access denied is because when it tries to access "\\Server1\SharedApps\Adobe\InstallAdobeFlash.cmd" from within the remote session it doesn't have any credentials.  The following links do a good job of explaining the situation and how to configure PS to use CredSSP so that credentials are passed on.

After that is set up you would need to modify your invoke-command to be more like
Invoke-command –ComputerName TestPC1 –ScriptBlock {Start-Process "\\Server1\SharedApps\Adobe\InstallAdobeFlash.cmd"} –credential mydomain\nick -authentication credssp

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However, I'm not 100% certain that calling start-process with the .CMD script will do what you want it to, but you'll find out!
Alternate way is to try with PsExec to execute the batch file..
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