TFS-ConnectToCollection.ps1

$tfsurl = 'https://tfs.someservername:8088/tfs/SomeAwesomeCollection'

$username = 'administrator'
$domain = 'MyCompany'
$password = 'Password1'


# Create URI 
$tfs_uri = [System.Uri]::new( $tfsurl ) 

# Create server object 
$_tfs_server = [Microsoft.TeamFoundation.Client.TfsTeamProjectCollectionFactory]::GetTeamProjectCollection($tfs_uri, $false, $fale)

# Create credentials object and assign them to server 
$cred = New-Object System.Net.NetworkCredential($username,$password,$domain)
$_tfs_server.Credentials = $cred


# Authenticate
try
{
    $_tfs_server.EnsureAuthenticated()

    return $_tfs_server
}
catch
{
    throw 'Error while tryint to authenticate to TFS server'

}