From e1f23438e211d647e9372678e620a89919a60fa1 Mon Sep 17 00:00:00 2001
From: Fabien Tschanz <fabien.tschanz@mobi.ch>
Date: Wed, 22 Jan 2025 10:01:06 +0100
Subject: [PATCH] Add empty or invalid configuration message

---
 CHANGELOG.md                                       | 2 ++
 Modules/Microsoft365DSC/Modules/M365DSCReport.psm1 | 6 +++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1ea6b11f8d..565d7823e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -57,6 +57,8 @@
 * M365DSCReport
   * Fix missing delimiter when called without the parameter.
     FIXES [#5634](https://github.com/microsoft/Microsoft365DSC/issues/5634)
+  * Add configuration validation to inform about comparisons against empty or invalid configurations.
+    FIXES [#5658](https://github.com/microsoft/Microsoft365DSC/issues/5658)
 * M365DSCTelemetryEngine
   * Report LCM details only if running as administrator.
 * M365DSCUtil
diff --git a/Modules/Microsoft365DSC/Modules/M365DSCReport.psm1 b/Modules/Microsoft365DSC/Modules/M365DSCReport.psm1
index b5008d6b73..839ed51456 100644
--- a/Modules/Microsoft365DSC/Modules/M365DSCReport.psm1
+++ b/Modules/Microsoft365DSC/Modules/M365DSCReport.psm1
@@ -2073,8 +2073,12 @@ function Initialize-M365DSCReporting
         $parsedContent = ConvertTo-DSCObject -Content $fileContent
     }
 
-    return $parsedContent
+    if ($null -eq $parsedContent)
+    {
+        Write-Warning -Message "No configuration found in $ConfigurationPath. Either the configuration was empty or the file was not a valid DSC configuration."
+    }
 
+    return $parsedContent
 }
 
 Export-ModuleMember -Function @(