Last Computer Reboot script

Question

I moved adaxes to a new virtual server (2022), upgraded powershell, and upgraded to 2025.1 so working through script issues. This script retrieves the last reboot for computers and now I get this error:

The term 'gwmi' is not recognized as a name of a cmdlet, function, script file, or executable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again. Stack trace: at , : line 1

When I run the script in powershell ise as my svcAdaxes user on the Adaxes server, it works.

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$resultobj = gwmi win32operatingsystem -ComputerName %name% | select csname, @{LABEL='LastBootUpTime';EXPRESSION={$.ConverttoDateTime($_.lastbootuptime)}}

$logmessage = $resultobj | Out-String -Stream foreach ($logline in $logmessage) { if ($logline -ne '') { $Context.LogMessage($logline, "Information") } }

$RebootTime = New-TimeSpan -Start $resultobj.LastBootUpTime -End (Get-Date)

$logmessage = 'The system was last restarted (' + $RebootTime.Days + ') days ago.' $Context.LogMessage($logmessage, "Information")

Answer 1

Hello,

The thing is that Adaxes 2025.1 only uses PowerShell 7 and does not use PowerShell 5. As per our investigation, WMI is not supported in PowerShell 7. There might be workarounds, but we were not able to find anything like that.

Comments

for others that end up here I rewrote my script which works in adaxes 2025.1 / powershell 7.

$LastBootupTime = (Get-CimInstance Win32_OperatingSystem -ComputerName '%name%').LastBootupTime

$RebootDays = ((Get-Date) - $LastbootupTime).Days

$logmessage = 'The system was last restarted ' + $RebootDays + ' days ago. (' + $LastBootupTime + ')'

$Context.LogMessage($logmessage, "Information")