# Check current CCMCache size
$before = (Get-ChildItem "C:\Windows\ccmcache" -File -Recurse -Force -ErrorAction SilentlyContinue |
    Measure-Object Length -Sum).Sum

Write-Host ("CCMCache before cleanup: {0:N2} GB" -f ($before / 1GB))

# Clear CCMCache using ConfigMgr API
$ccm = New-Object -ComObject UIResource.UIResourceMgr
$cache = $ccm.GetCacheInfo()

$cache.GetCacheElements() | ForEach-Object {
    $cache.DeleteCacheElement($_.CacheElementID)
}

# Check CCMCache size after cleanup
$after = (Get-ChildItem "C:\Windows\ccmcache" -File -Recurse -Force -ErrorAction SilentlyContinue |
    Measure-Object Length -Sum).Sum

Write-Host ("CCMCache after cleanup : {0:N2} GB" -f ($after / 1GB))
Write-Host ("Space reclaimed       : {0:N2} GB" -f (($before - $after) / 1GB))

# Check free space on C:
$drive = Get-PSDrive C

Write-Host ("Free space on C:       {0:N2} GB" -f ($drive.Free / 1GB))