Powershell script to check if service is started if not then start it

Question

I have built a small powershell script to check if a service is started   If it is not started  try to start it then wait one minute and check again   Keep repeating this process until the service start successfully   I have found the loop does not behave the way I expected in that I seem to have to re-assign the service variable within the loop in order to get the updated status   Here is my code    ServiceName    Serenade   arrService   Get-Service -Name  ServiceName  if   arrService Status -ne  Running     ServiceStarted    false  Else  ServiceStarted    true   while   ServiceStarted -ne  true   Start-Service  ServiceName write-host  arrService status write-host  Service started  Start-Sleep -seconds 60  arrService   Get-Service -Name  ServiceName  Why is this line needed  if   arrService Status -eq  Running     ServiceStarted    true      If I run the code without the third last line  the one with the comment   I get the following output   I can check in the Windows service manager and the service was clearly started after the first loop   Why is that third last line required     Given this behavior  is there a better way to write this code   Thank you

User · Answer

Given  arrService   Get-Service -Name  ServiceName   arrService Status is a static property  corresponding to the value at the time of the call  Use  arrService Refresh   when needed to renew the properties to current values   MSDN   ServiceController Refresh   Refreshes property values by resetting the properties to their current values

User · Answer

A potentially simpler solution   get-service  servicename     Where     Status -eq  Stopped     start-service

User · Answer

Trying to do things as smooth as possible - I here suggest modifying GuyWhoLikesPowershell s suggestion slightly  I replaced the if and until with one while - and I check for  quot Stopped quot   since I don t want to start if status is  quot starting quot  or  quot  Stopping quot    Service    ServiceName  while   Get-Service  Service  Status -eq  Stopped          Start-Service  Service -ErrorAction SilentlyContinue     Start-Sleep 10    Return  quot    Service  has STARTED quot

User · Answer

The below is a compact script that will check if  quot running quot  and attempt start service until the service returns as running   Service    ServiceName  If   Get-Service  Service  Status -ne  Running        do          Start-Service  Service -ErrorAction SilentlyContinue        Start-Sleep 10      until   Get-Service  Service  Status -eq  Running     Return  quot    Service  has STARTED quot

User · Answer

Combining Alaa Akoum and Nick Eagle s solutions allowed me to loop through a series of windows services and stop them if they re running     stop the following Windows services in the specified order   Array   Services    Service1   Service2   Service3   Service4   Service5      loop through each service  if its running  stop it foreach  ServiceName in  Services         arrService   Get-Service -Name  ServiceName     write-host  ServiceName     while   arrService Status -eq  Running                 Stop-Service  ServiceName         write-host  arrService status         write-host  Service stopping          Start-Sleep -seconds 60          arrService Refresh           if   arrService Status -eq  Stopped                               Write-Host  Service is now Stopped                            The same can be done to start a series of service if they are not running     start the following Windows services in the specified order   Array   Services    Service1   Service2   Service3   Service4   Service5      loop through each service  if its not running  start it foreach  ServiceName in  Services         arrService   Get-Service -Name  ServiceName     write-host  ServiceName     while   arrService Status -ne  Running                 Start-Service  ServiceName         write-host  arrService status         write-host  Service starting          Start-Sleep -seconds 60          arrService Refresh           if   arrService Status -eq  Running                       Write-Host  Service is now Running

User · Answer

Array   servers    Server1   server2    service  YOUR SERVICE   foreach  server in  servers          srvc   Get-WmiObject -query  SELECT   FROM win32 service  WHERE   name LIKE   service    -computername  server         res Write-Output  srvc   Format-Table -AutoSize  server   fmtMode   fmtState   fmtStatus         srvc startservice        res

User · Answer

I think you may have over-complicated your code  If you are just checking to see if a service is running and  if not  run it and then stop re-evaluating  the following should suffice   Good point on the refresh    ServiceName    Serenade   arrService   Get-Service -Name  ServiceName  while   arrService Status -ne  Running          Start-Service  ServiceName     write-host  arrService status     write-host  Service starting      Start-Sleep -seconds 60      arrService Refresh       if   arrService Status -eq  Running                 Write-Host  Service is now Running

[powershell] Powershell script to check if service is started, if not then start it

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