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Many enterprises are facing this collision between security posture (MFA on all privileged identities) and Power Platform's limited support for non-interactive auth like Service Principals. Let's break it down strategically:
| Area | Risk | Notes |
|---|---|---|
| MFA enforcement for service accounts | Service account logins to Azure Portal (even indirect) will trigger enforcement post-Sep 1, 2025 | Microsoft announcement |
| Token lifetime (90 days) | Requires manual renewal for each Flow connection | A mobile phone dependency on service accounts is fragile and not compliant |
| Unsupported connectors for SPN | SharePoint, Outlook, Teams, SQL still rely on delegated auth (i.e., user context) | MS Graph supports SPN, but not all actions in Power Automate use it under the hood |
Use SPN + client secret where possible (Graph, Azure AD, Key Vault)
Use dedicated managed identity (where supported — e.g., Azure Functions, Logic Apps, or Power Automate Hosted RPA bots)
For unsupported connectors, maintain least-privileged service accounts with hardened policies and automatic monitoring
Use Power Platform API (or Admin Connectors) to:
Detect expired connections (GET /connections)
Rebind new credentials where possible
This is partial — works best in environments with environment variables and ALM
Use hardware tokens (FIDO2, YubiKey) or Authenticator app with shared device policy for group MFA management
Consider Conditional Access policies that exempt specific low-privilege service accounts from MFA only for Flow execution, not Azure Portal logins (carefully scoped and monitored)
A 48-hour timeout for a service account with MFA will accelerate learning but also surface connector-specific timeout behaviors
Use this to identify which connectors or Flows require re-architecture or connector swap-outs (e.g., Graph instead of Outlook)
| Area | Current Gap | What's Coming? |
|---|---|---|
| SPN support for Outlook/Teams | Not supported | No ETA — track on Microsoft Ideas |
| Managed Identity for Cloud Flows | Not supported | Under review by Microsoft source |
| MFA for SPNs | Not required | Good: SPNs will not be impacted by Sept 1 enforcement |
Build inventory of all service account–based Flows by connector and token expiry
Classify:
Can migrate to SPN or managed identity? ✅
Requires human MFA re-auth every 90 days? ⚠️
For ⚠️, plan redesign, or build automated connection alerting & renewal process.
If you'd like, I can help generate a PowerShell or Power Automate script to extract all Flows with flagged service accounts and connection expiry timestamps.
|
# Connect to Power Platform admin
Install-Module -Name Microsoft.PowerApps.Administration.PowerShell -Force Install-Module -Name Microsoft.PowerApps.PowerShell -Force # Login (use global admin or Power Platform admin role)
Add-PowerAppsAccount # Get all environments
$environments = Get-AdminPowerAppEnvironment # Initialize result array
$flowAudit = @() foreach ($env in $environments) {
Write-Host "Scanning Environment: $($env.DisplayName)" # Get all flows in environment
$flows = Get-AdminFlow -EnvironmentName $env.EnvironmentName foreach ($flow in $flows) {
try { # Get connections used in the flow $connections = Get-AdminFlowConnectionReferences -EnvironmentName $env.EnvironmentName -FlowName $flow.FlowName foreach ($conn in $connections) { $connectionId = $conn.ConnectionReference.ConnectionId $connectionDetails = Get-AdminConnection -EnvironmentName $env.EnvironmentName -ConnectorId $conn.ConnectorId -ConnectionId $connectionId $flowAudit += [PSCustomObject]@{
EnvironmentName = $env.DisplayName FlowName = $flow.DisplayName FlowOwner = $flow.Owner.DisplayName ConnectionName = $conn.ConnectorId ConnectionUser = $connectionDetails.CreatedBy.DisplayName ConnectionUserUPN = $connectionDetails.CreatedBy.Email ConnectionStatus = $connectionDetails.Status CreatedTime = $connectionDetails.CreatedTime LastModifiedTime = $connectionDetails.LastModifiedTime ExpiryTime = $connectionDetails.ExpirationTime # May be null for some types } } } catch { Write-Warning "Failed to retrieve connection info for flow: $($flow.DisplayName)" } } } # Export to CSV
$flowAudit | Export-Csv -Path ".\PowerAutomate_ConnectionAudit.csv" -NoTypeInformation Write-Host "Audit complete. Output saved to PowerAutomate_ConnectionAudit.csv" |
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