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Delete all Microsoft 365 groups and SharePoint sites

Author: Patrick Lamber

Another example how you can delete all Microsoft 365 Groups and SharePoint Online sites in your development environment.

### Warning. Use with caution. This script deletes all M365 Groups and SPO Sites in your tenant
$devAccount = "<putyourupnhereforsecuritycheck>"
### Deletes the resources from the recyclebin. The CLI does not support this feature yet
$skipRecycleBin = $true

$m365Status = m365 status --output text
Write-Host $m365Status
if ($m365Status -eq "Logged Out") {
  # Connection to Microsoft 365
  m365 login
  $m365Status = m365 status
}

# Check added as security measure
if ($m365Status[0].ToString().IndexOf($devAccount) -eq -1) {
  Write-Host "The user does not match the target development account. Stopping..." -ForegroundColor Red
  return;
}

Write-host "Retrieving all groups..."
$allGroups = m365 aad m365group list -o json | ConvertFrom-Json
$groupCount = $allGroups.Count

Write-Host "Processing $groupCount sites..."
#Loop through each site
$groupCounter = 0

foreach ($group in $allGroups) {
  $groupCounter++
  Write-Host "Deleting $($group.displayName)... ($groupCounter/$groupCount)"
  m365 aad m365group remove --id $group.id --force
}

Write-host "Retrieving all SPO sites..."
$allSites = m365 spo site list --query "[?contains(Template,'SITEPAGEPUBLISHING') || contains(Template,'STS')]" | ConvertFrom-Json
$siteCount = $allSites.Count

Write-Host "Processing $siteCount sites..."
#Loop through each site
$siteCounter = 0

foreach ($site in $allSites) {
  $siteCounter++
  Write-Host "Deleting $($site.Url)... ($siteCounter/$siteCount)"
  m365 spo site remove --url $site.Url --skipRecycleBin $skipRecycleBin --force
}
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