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Audit Failed Sign-in Attempts in Entra
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Audit Failed Signin Attempts in Entra/GetEntraFailedSignIns.ps1
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233
Audit Failed Signin Attempts in Entra/GetEntraFailedSignIns.ps1
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<#
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=============================================================================================
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Name: Export Microsoft 365 Sign-in Failure Report Using PowerShell
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Version: 1.0
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Website: o365reports.com
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~~~~~~~~~~~~~~~~~~
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Script Highlights:
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~~~~~~~~~~~~~~~~~~
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1. The script automatically verifies and installs the Microsoft Graph PowerShell SDK module (if not installed already) upon your confirmation.
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2. Generates a report that retrieves all failed interactive sign-in attempts by default.
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3. Enables filtering of failed attempts from the following sign-in types.
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-> Non-interactive user sign-ins
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-> Service principal sign-ins
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-> Managed identity sign-ins
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-> All type of sign-in failure events
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4. Allows you to export a failed login attempts report for a custom period.
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5. View sign-in failure events based on error code.
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6. Helps export failed risky sign-ins alone.
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7. Exports a report on guest users’ sign-in failures.
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8. Segments failed sign-in attempts based on MFA enforced & not enforced.
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9. You can export the report to choose either All users or Specific user(s).
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10. The script can be executed with an MFA-enabled account too.
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11. Exports report results as a CSV file.
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12. The script is scheduler friendly.
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13. It can be executed with certificate-based authentication (CBA) too.
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For detailed script execution: https://o365reports.com/2025/05/13/export-microsoft-365-sign-in-failure-report-using-powershell/
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============================================================================================
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#>
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Param
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(
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[nullable[datetime]]$StartDate, #Pass value as YYYY-MM-DD
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[nullable[datetime]]$EndDate, #Pass value as YYYY-MM-DD
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[nullable[int]]$ErrorCode=$null,
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[ValidateSet( "NonInteractiveSignIns", "ServicePrincipalSignIns", "ManagedIdentitySignIns", "AllSignIns" )]
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[string]$SignInEventType,
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[switch]$RiskySignInsOnly,
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[switch]$GuestUserSignInsOnly,
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[switch]$MFASignInsOnly,
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[switch]$NonMFASignInsOnly,
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[switch]$CreateSession,
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[string[]]$UserPrincipalName,
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[string]$TenantId,
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[string]$ClientId,
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[string]$CertificateThumbprint
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)
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Function Connect_MgGraph
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{
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#Check for module installation
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$Module=Get-Module -Name microsoft.graph.beta.reports -ListAvailable
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if($Module.count -eq 0)
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{
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Write-Host Microsoft Graph Beta PowerShell SDK is not available -ForegroundColor yellow
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$Confirm= Read-Host Are you sure you want to install module? [Y] Yes [N] No
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if($Confirm -match "[yY]")
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{
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Write-host "Installing Microsoft Graph Beta PowerShell module..."
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Install-Module Microsoft.Graph.beta.reports -Repository PSGallery -Scope CurrentUser -AllowClobber -Force
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}
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else
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{
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Write-Host "Microsoft Graph Beta PowerShell module is required to run this script. Please install module using Install-Module Microsoft.Graph.beta.reports cmdlet."
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Exit
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}
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}
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#Disconnect Existing MgGraph session
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if($CreateSession.IsPresent)
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{
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Disconnect-MgGraph
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}
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Write-Host Connecting to Microsoft Graph...
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if(($TenantId -ne "") -and ($ClientId -ne "") -and ($CertificateThumbprint -ne ""))
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{
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Connect-MgGraph -TenantId $TenantId -AppId $ClientId -CertificateThumbprint $CertificateThumbprint -NoWelcome
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}
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else
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{
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Connect-MgGraph -Scopes "AuditLog.Read.All", "Policy.Read.ConditionalAccess" -NoWelcome
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}
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}
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Connect_MgGraph
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$Location = Get-Location
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$CurrentDate = Get-Date
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$ExportCSV = "$Location\M365Users_Failed_SignIn_Report$((Get-Date -format yyyy-MMM-dd-ddd` hh-mm-ss` tt).ToString()).csv"
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$ExportResult =""
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$ExportResults = @()
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$SignInFilter = $Filter = $null
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if ($StartDate -ne $null) {
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$ThresholdDate = ($CurrentDate).AddDays(-30)
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if ($StartDate -lt $ThresholdDate) {
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Write-Host "Error: The StartDate cannot be earlier than $($ThresholdDate.ToString('yyyy-MM-dd'))." -ForegroundColor Red
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Exit
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} else {
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$SignInFilter += " and (createdDateTime ge $($StartDate.ToString('yyyy-MM-dd')))"
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}
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}
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if ($EndDate -ne $null) {
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$SignInFilter += " and (createdDateTime le $($EndDate.AddDays(1).ToString("yyyy-MM-dd")))"
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}
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if ($GuestUserSignInsOnly.IsPresent) {
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$SignInFilter += " and (UserType eq 'guest')"
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}
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switch ($SignInEventType) {
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#"InteractiveSignIns" { $SignInFilter += " and (signInEventTypes/any(t: t eq 'interactiveUser'))" }
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"NonInteractiveSignIns" { $SignInFilter += " and (signInEventTypes/any(t: t eq 'noninteractiveUser'))" }
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"ServicePrincipalSignIns" { $SignInFilter += " and (signInEventTypes/any(t: t eq 'servicePrincipal'))" }
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"ManagedIdentitySignIns" { $SignInFilter += " and (signInEventTypes/any(t: t eq 'managedIdentity'))" }
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"AllSignIns" { $SignInFilter += " and ((signInEventTypes/any(t: t eq 'interactiveUser')) or (signInEventTypes/any(t: t eq 'nonInteractiveUser')) or (signInEventTypes/any(t: t eq 'servicePrincipal')) or (signInEventTypes/any(t: t eq 'managedIdentity')))" }
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}
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if ($NonMFASignInsOnly.IsPresent) {
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$SignInFilter += " and (authenticationRequirement eq 'singleFactorAuthentication')"
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}
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if ($MFASignInsOnly.IsPresent) {
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$SignInFilter += " and (authenticationRequirement eq 'multiFactorAuthentication')"
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}
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if (!([string]::IsNullOrEmpty($ErrorCode))) {
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$Filter = "(Status/Errorcode eq $($ErrorCode)) $($SignInFilter)"
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} else {
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$Filter = "(Status/Errorcode ne 0) $($SignInFilter)"
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}
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$Count=0
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$PrintedLogs=0
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#retrieve signin activities
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Write-Host "Generating M365 users' failed signin report..."
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Get-MgBetaAuditLogSignIn -All -Filter "$($Filter)" | ForEach-Object {
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$Count++
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$UPN=$_.UserPrincipalName
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Write-Progress -Activity "`n Processed sign-in record: $count"
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$CreatedDate=$_.CreatedDateTime
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$Id=$_.Id
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$UserDisplayName=$_.UserDisplayName
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$UPN=$_.UserPrincipalName
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$Authentication=$_.AuthenticationRequirement
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$Location="$($_.Location.City), $($_.Location.State), $($_.Location.CountryOrRegion)"
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$DeviceName=$_.DeviceDetail.DisplayName
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$Browser=$_.DeviceDetail.Browser
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$OperatingSystem=$_.DeviceDetail.OperatingSystem
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$IpAddress=$_.IpAddress
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$FlaggedForReview = $_.FlaggedForReview
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$SignInErrorCode=$_.Status.ErrorCode
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$FailureReason=$_.Status.FailureReason
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$AdditionalDetails = $_.Status.AdditionalDetails
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$UserType=$_.UserType
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$IsInteractive=$_.IsInteractive
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$RiskDetail=$_.RiskDetail
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$RiskState=$_.RiskState
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$AppDispalyName=$_.AppDisplayName
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$ResourceDisplayName=$_.ResourceDisplayName
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$ConditionalAccessPolicyStatus=$_.ConditionalAccessStatus
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$AppliedConditionalAccessPolicies=$_.AppliedConditionalAccessPolicies
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$AppliedPolicies = @()
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$AppliedConditionalAccessPolicies | ForEach-Object {
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if($_.Result -eq 'success' -or $_.Result -eq 'failure'){
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$AppliedPolicies += $_.DisplayName
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}
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}
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if($AppliedPolicies.Count -eq 0){
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$AppliedPolicies = "None"
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} else{
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$AppliedPolicies = $AppliedPolicies -join ", "
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}
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if($SignInErrorCode -ne 0) { $Status='Failed' }
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if($FailureReason -eq 'Other.') {
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$FailureReason="Others"
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}
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#Declaring Print flag for all sign-ins
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$Print=1
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#Filter for risky sign-ins
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if(($RiskySignInsOnly.IsPresent) -and ($RiskDetail -eq 'none'))
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{
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$Print=0
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}
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#Filter for specific user sign-ins
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if(($UserPrincipalName -ne $null) -and ($UserPrincipalName -notcontains $UPN))
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{
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$Print=0
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}
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#Export users to output file
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if($Print -eq 1)
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{
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$PrintedLogs++
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$ExportResult=[PSCustomObject]@{'Signin Date'=$CreatedDate; 'UPN'=$UPN; 'User Name'=$UserDisplayName; 'Application Name'=$AppDispalyName; 'Resource Name'=$ResourceDisplayName; 'Status'=$Status; 'Error Code'=$SignInErrorCode; 'Failure Reason'=$FailureReason; 'User type'=$UserType; 'Ip Address'=$IpAddress; 'Location'=$Location; 'Device Name'=$DeviceName; 'Browser'=$Browser; 'Operating System'=$OperatingSystem; 'Authentication Requirement'=$Authentication; 'Conditional access status'=$ConditionalAccessPolicyStatus; 'Applied Conditional Access Policies'=$AppliedPolicies; 'Risk detail'=$RiskDetail; 'Risk state'=$RiskState; 'SigninId'=$Id; 'Flagged For Review'=$FlaggedForReview; 'IsInteractive'=$IsInteractive; 'AdditionalDetails'=$AdditionalDetails;}
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$ExportResult | Export-Csv -Path $ExportCSV -Notype -Append
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}
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}
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#Disconnect the session after execution
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Disconnect-MgGraph | Out-Null
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Write-Host `n~~ Script prepared by AdminDroid Community ~~`n -ForegroundColor Green
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Write-Host "~~ Check out " -NoNewline -ForegroundColor Green; Write-Host "admindroid.com" -ForegroundColor Yellow -NoNewline; Write-Host " to get access to 1800+ Microsoft 365 reports. ~~" -ForegroundColor Green `n
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#Open output file after execution
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if((Test-Path -Path $ExportCSV) -eq "True")
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{
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Write-Host " The Output file availble in: " -NoNewline -ForegroundColor Yellow; Write-Host "$ExportCSV" `n
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Write-Host " Exported report has $PrintedLogs failed signin activities."
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$Prompt = New-Object -ComObject wscript.shell
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$UserInput = $Prompt.popup("Do you want to open output file?",` 0,"Open Output File",4)
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if ($UserInput -eq 6)
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{
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Invoke-Item "$ExportCSV"
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}
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}
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else
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{
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Write-Host "No logs found"
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}
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