From 8940515351ee5d64a4ae30b19bb6e371cc99592f Mon Sep 17 00:00:00 2001
From: Nik Charlebois <nik_charlebois@hotmail.com>
Date: Wed, 1 Nov 2023 16:45:18 -0400
Subject: [PATCH] Fixes #3842

---
 CHANGELOG.md                                             | 6 ++++++
 .../MSFT_O365OrgSettings/MSFT_O365OrgSettings.psm1       | 9 ++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3697a33a6b..efec24833c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Change log for Microsoft365DSC
 
+# UNRELEASED
+
+* O365OrgSettings
+  * Force register the Office on the Web ServicePrincipal is it is not present.
+    FIXES [#3842](https://github.com/microsoft/Microsoft365DSC/issues/3842)
+
 # 1.23.1101.1
 
 * AADRoleEligibilityScheduleRequest
diff --git a/Modules/Microsoft365DSC/DSCResources/MSFT_O365OrgSettings/MSFT_O365OrgSettings.psm1 b/Modules/Microsoft365DSC/DSCResources/MSFT_O365OrgSettings/MSFT_O365OrgSettings.psm1
index e81751c228..7aae81cc87 100644
--- a/Modules/Microsoft365DSC/DSCResources/MSFT_O365OrgSettings/MSFT_O365OrgSettings.psm1
+++ b/Modules/Microsoft365DSC/DSCResources/MSFT_O365OrgSettings/MSFT_O365OrgSettings.psm1
@@ -196,7 +196,14 @@ function Get-TargetResource
     try
     {
         $OfficeOnlineId = 'c1f33bc0-bdb4-4248-ba9b-096807ddb43e'
-        $M365WebEnableUsersToOpenFilesFrom3PStorageValue = Get-MgServicePrincipal -Filter "appId eq '$OfficeOnlineId'" -Property 'AccountEnabled'
+        $M365WebEnableUsersToOpenFilesFrom3PStorageValue = Get-MgServicePrincipal -Filter "appId eq '$OfficeOnlineId'" -Property 'AccountEnabled' -ErrorAction SilentlyContinue
+        if ($null -eq $M365WebEnableUsersToOpenFilesFrom3PStorageValue)
+        {
+            Write-Verbose -Message "Registering the Office on the web Service Principal"
+            New-MgServicePrincipal -AppId 'c1f33bc0-bdb4-4248-ba9b-096807ddb43e' -ErrorAction Stop | Out-Null
+            $M365WebEnableUsersToOpenFilesFrom3PStorageValue = Get-MgServicePrincipal -Filter "appId eq '$OfficeOnlineId'" -Property 'AccountEnabled' -ErrorAction SilentlyContinue
+        }
+
         if ($null -ne $M365WebEnableUsersToOpenFilesFrom3PStorageValue)
         {
             $results += @{