Powershell/SQL run script in background

This is the sql trigger: BEGIN --SP declare @cmd nvarchar(2000) declare @folder nvarchar(200) SET @folder = ''''+'"'+(SELECT CAST(Project_ID as nvarchar)+' '+Name FROM Project WHERE Project_ID=@projID)+'"'+'''' set @cmd = 'powershell "D:\PS\[login to view URL]"'+' ' +@folder exec master.dbo.xp_cmdshell @cmd END --SP This is script that works when called from sql but takes very long to finish: param( [Parameter(Position=0, Mandatory=$true)] [string]$FolderName ) $username = "mg@[login to view URL]" $PasswordFile = "D:\PS\Passwords\[login to view URL]" $KeyFile = "D:\PS\Passwords\[login to view URL]" $key = Get-Content $KeyFile $UserCred = New-Object [login to view URL] ($username, (Get-Content $PasswordFile | ConvertTo-SecureString -Key $key)) $NetWorkCred = New-Object [login to view URL]($username , (Get-Content $PasswordFile | ConvertTo-SecureString -Key $key)) $Session = New-PSSession -ConfigurationName [login to view URL] -ConnectionUri [login to view URL] -Credential $UserCred -Authentication Basic -AllowRedirection Import-Module D:\PS\[login to view URL] Create-Folder -MailboxName prosjekt@[login to view URL] -Credentials $NetWorkCred -NewFolderName $FolderName -ParentFolder '\Innboks' Import-PSSession $Session $ProjectNo = $[login to view URL](0,4) New-InboxRule -Name $ProjectNo -Mailbox prosjekt@[login to view URL] -SubjectOrBodyContainsWords "PREFAB$ProjectNo" -MoveToFolder ":\Innboks\$FolderName" -StopProcessingRules $true -confirm:$false -Force Remove-PSSession $Session This is script that works when executed locally on server and works in background, but it does not work when called from sql trigger: param( [Parameter(Position=0, Mandatory=$true)] [string]$FolderName ) $createFolderAndRule = { param([string]$FolderName) $username = "mg@[login to view URL]" $PasswordFile = "D:\PS\Passwords\[login to view URL]" $KeyFile = "D:\PS\Passwords\[login to view URL]" $key = Get-Content $KeyFile $UserCred = New-Object [login to view URL] ($username, (Get-Content $PasswordFile | ConvertTo-SecureString -Key $key)) $NetWorkCred = New-Object [login to view URL]($username , (Get-Content $PasswordFile | ConvertTo-SecureString -Key $key)) $Session = New-PSSession -ConfigurationName [login to view URL] -ConnectionUri [login to view URL] -Credential $UserCred -Authentication Basic -AllowRedirection Import-Module D:\PS\[login to view URL] Create-Folder -MailboxName prosjekt@[login to view URL] -Credentials $NetWorkCred -NewFolderName $FolderName -ParentFolder '\Innboks' Import-PSSession $Session $ProjectNo = $[login to view URL](0,4) New-InboxRule -Name $ProjectNo -Mailbox prosjekt@[login to view URL] -SubjectOrBodyContainsWords "PREFAB$ProjectNo" -MoveToFolder ":\Innboks\$FolderName" -StopProcessingRules $true -confirm:$false -Force Remove-PSSession $Session } Start-job -ScriptBlock $createFolderAndRule -Argumentlist $FolderName