I have a Powershell script that captures VMware metrics. This uses Connect-VIServer to make the connection to Virtual Center. If I run the script interactively it will pass through authentication without me using the username and password parameters on the Connect-VIServer command (Connect-VIServer -server servername). If I take the same script and run it as a scheduled task (running task under same user context) it will fail. The only way I have got it to run is to add the username and PW parameters to the Connect-VIServer command which means the username and PW are stored in the script - obviously an unacceptable situation.

Any ideas?

I will answer my own question as I'm sure others will run into this issue with their schedule tasks.

http://professionalvmware.com/2009/...l-storage/

To create the credcential file run this:
New-VICredentialStoreItem -host 'servername.com' -user 'domain\fredsmith' -password 'blahblah1' -file \\servername\sharename\Credfile.xml

To view the credentials in the credentials file run this:

$creds = Get-VICredentialStoreItem -file "\\servername\sharename\Credfile.xml"
$creds | fl *

To use the credentials run this:
$creds = Get-VICredentialStoreItem -file "\\servername\sharename\Credfile.xml"
Connect-viserver -Server $creds.Host -User $creds.User -Password $creds.Password

You can put multiple credentials in the same encrypted credential file. To connect to each server in a multi credential file run this:

ForEach ($creds in $credentials) {
Connect-viserver -Server $creds.Host -User $creds.User -Password $creds.Password
# Do other stuff here...
}

Enjoy - Richard

Thanks for posting the answer!