management-scripts/Cleanup-SystemTempFiles.ps1

$SysTemp = "${Env:SystemRoot}\TEMP"

## Remove runaway AppX logs;n
If ( (IsWindowsVersion -ge "6.2") )
{
    Write-Output "Deleting old AppX log files from ${SysTemp}"
    Get-ChildItem -Path $SysTemp | Where { $_.Name -like "AppXDeploymentServer_*.evtx" } | Remove-Item -Force -ErrorAction SilentlyContinue
    Get-ChildItem -Path $SysTemp | Where { $_.Name -like "AppxErrorReport_*.txt" } | Remove-Item -Force -ErrorAction SilentlyContinue
    Get-ChildItem -Path $SysTemp | Where { $_.Name -like "AppXPackaging_*.evtx" } | Remove-Item -Force -ErrorAction SilentlyContinue
    Get-ChildItem -Path $SysTemp | Where { $_.Name -like "Application_*.evtx" } | Remove-Item -Force -ErrorAction SilentlyContinue
    Get-ChildItem -Path $SysTemp | Where { $_.Name -like "System_*.evtx" } | Remove-Item -Force -ErrorAction SilentlyContinue
    Get-ChildItem -Path $SysTemp | Where { $_.Name -like "Microsoft-Windows-WindowsUpdateClient_*.evtx" } | Remove-Item -Force -ErrorAction SilentlyContinue
}

## Remove computer log files
Get-ChildItem -Path $SysTemp | Where { $_.Name -like "Microsoft-Windows-AppReadiness_Admin_*.evtx" } | Remove-Item -Force -ErrorAction SilentlyContinue
Get-ChildItem -Path $SysTemp | Where { $_.Name -like "${Env:COMPUTERNAME}-*.log" } | Remove-Item -Force -ErrorAction SilentlyContinue

## Remove runaway CBS logs
$CBSLogDir = "${Env:SystemRoot}\Logs\CBS"
If ( Test-Path $CBSLogDir )
{
    Write-Output "Deleting old CBS log files from ${CBSLogDir}"
    Get-ChildItem -Path $CBSLogDir -File | Where { ( $_.Name -like "CbsPersist_*.log" ) -or ( $_.Name -like "CbsPersist_*.cab" ) } | Remove-Item -Force -ErrorAction SilentlyContinue
}

## Remove all system temp files older than the specified number of days
$OlderThan=7
$timedelta = New-TimeSpan -Days $OlderThan
Write-Output "Deleting all files more than ${OlderThan} day(s) old ${SysTemp}"
Foreach ( $item in (Get-ChildItem -Path "${SysTemp}") )
{
    ## If it's older than the number of days specified, recursively delete the directory
    If ( $item.LastWriteTime -lt ((Get-Date) - $timedelta) ) { Remove-Item $item.FullName -Recurse -ErrorAction SilentlyContinue -Force -ErrorAction SilentlyContinue }

}