question

Hello,

in my lab environment I set up the Microsoft Deployment Toolkit and create and import an application which is basically a powershell script to join the machine to the domain. The task sequence just contains the installation of windows server 2019 and the domain join script. When it comes to the execution of that script this error appears:

Add-Computer : Computer 'TEST-MACHINE' failed to join domain 'LAB.lcl' from its current workgroup
'WORKGROUP' with following error message: Multiple connections to a server or shared resource by
the same user, using more than one user name, are not allowed. Disconnect all previous
connections to the server or shared resource and try again.
At \\SRVDC01.LAB.lcl\DeploymentShare$\Applications\APP_Join-Domain\Join.ps1:258 char:41
+ ... Add-Computer -ComputerName "$env:COMPUTERNAME" -DomainNam ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : OperationStopped: (SRVINFRA01:String) [Add-Computer], InvalidOperat
ionException
+ FullyQualifiedErrorId : FailToJoinDomainFromWorkgroup,Microsoft.PowerShell.Commands.AddComp
uterCommand

Thats the code:

 <LAB>
     <Config Active = "True" >
         <Accounts>
             <DomainMembership UserName = "LAB\ACC_DomainAction" Password = "UGEkJHcwcmQ=" /> #its just Pa$$w0rd
         </Accounts>
     </Config>
     <App TaskName = "LAB" Active = "True" >
         <Task Name = "DomainMembership" Active = "True" Order = "0" Action = "Join" Domain = "LAB.lcl" />
     </App>
 </LAB>
 '@
    
 $DAUserName = $($Global:TaskXML.LAB.Config.Accounts.DomainMembership.Username) 
 $DAPassword = LAB-Decode-Password -EncPassword $($Global:TaskXML.LAB.Config.Accounts.DomainMembership.Password)
 $DACred = New-Object System.Management.Automation.PSCredential -ArgumentList @($DAUserName,(ConvertTo-SecureString -String $DAPassword -AsPlainText -Force))
    
 If($ActiveTask.Action -eq "Join"){
     If((Get-module ActiveDirectory).Name -eq 'ActiveDirectory'){
         Write-Host "PS module ActiveDirectory already imported" -BackgroundColor Green -ForegroundColor Black
     }Else{
         Import-Module ActiveDirectory
         Write-Host "PS module ActiveDirectory imported" -BackgroundColor Green -ForegroundColor Black
     }
    
     net stop server  #A hint from the internet
     net start server #A hint from the internet
     Add-Computer -ComputerName "$env:COMPUTERNAME" -DomainName $ActiveTask.Domain -Credential $DACred -Force -PassThru -Verbose
 }

I also try net stop and start the server service without any effect.

Any idea how to solve this issue?

Cheers