diff --git a/F4SDM42WebApi/F4SD - M42WebApi.csproj b/F4SDM42WebApi/F4SD - M42WebApi.csproj
index 632e8ee..3023793 100644
--- a/F4SDM42WebApi/F4SD - M42WebApi.csproj	
+++ b/F4SDM42WebApi/F4SD - M42WebApi.csproj	
@@ -13,7 +13,7 @@
     <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
     <M42ExtensionId>6673a25d-33d6-4072-91d9-abed4be1a966</M42ExtensionId>
     <M42AssemblyPattern>C4ITF4SD*.*</M42AssemblyPattern>
-    <M42PackageVersion>1.4.0.29</M42PackageVersion>
+    <M42PackageVersion>1.4.0.30</M42PackageVersion>
     <M42BuildPackage>true</M42BuildPackage>
   </PropertyGroup>
 
@@ -34,6 +34,10 @@
       <HintPath>M42Libraries\26.1\Matrix42.Contracts.ServiceManagement.dll</HintPath>
       <Private>false</Private>
     </Reference>
+    <Reference Include="Matrix42.BizLogic.Journal">
+      <HintPath>M42Libraries\26.1\Matrix42.BizLogic.Journal.dll</HintPath>
+      <Private>false</Private>
+    </Reference>
     <Reference Include="Matrix42.Hosting.Contracts">
       <HintPath>M42Libraries\26.1\Matrix42.Hosting.Contracts.dll</HintPath>
       <Private>false</Private>
diff --git a/F4SDM42WebApi/F4SDHelperService.cs b/F4SDM42WebApi/F4SDHelperService.cs
index f6f2040..c6fcc86 100644
--- a/F4SDM42WebApi/F4SDHelperService.cs
+++ b/F4SDM42WebApi/F4SDHelperService.cs
@@ -1,6 +1,7 @@
 using C4IT.F4SDM;
 using C4IT.FASD.Base;
 using C4IT.Logging;
+using Matrix42.BizLogic.Common.Journal;
 using Matrix42.Common;
 using Newtonsoft.Json;
 using System;
@@ -1475,6 +1476,12 @@ namespace C4IT.F4SD
                 }
                 catch (TargetInvocationException ex) when (ex.InnerException != null)
                 {
+                    if (IsStorageWebApiExplorerResolutionFailure(ex.InnerException))
+                    {
+                        LogEntry("JournalService.GetJournalList requires IStorageService in this Matrix42 build. Falling back to JournalManager.GetObjectEntries for sandbox compatibility.", LogLevels.Warning);
+                        return LoadJournalEntriesFromJournalManager(activityEOID, objectLinkTemplate);
+                    }
+
                     throw ex.InnerException;
                 }
             }
@@ -1482,6 +1489,38 @@ namespace C4IT.F4SD
             throw new MissingMethodException($"No compatible IJournalService.GetJournalList overload was found on '{serviceType.FullName}'. Available overloads: {string.Join("; ", methods.Select(FormatMethodSignature))}");
         }
 
+        private static IReadOnlyList<Matrix42.Contracts.Platform.Data.JournalEntryInfo> LoadJournalEntriesFromJournalManager(Guid activityEOID, string objectLinkTemplate)
+        {
+            var entries = JournalManager.GetObjectEntries(
+                activityEOID,
+                false,
+                null,
+                0,
+                50,
+                false,
+                objectLinkTemplate,
+                120);
+
+            return entries
+                .Select(item => new Matrix42.Contracts.Platform.Data.JournalEntryInfo
+                {
+                    Id = item.Id,
+                    Creator = item.CreatorName,
+                    CreatedDate = item.CreatedDate,
+                    Header = item.Header,
+                    Text = item.Body ?? string.Empty,
+                    VisibleInPortal = item.VisibleInPortal
+                })
+                .ToList();
+        }
+
+        private static bool IsStorageWebApiExplorerResolutionFailure(Exception exception)
+        {
+            var details = exception.ToString();
+            return details.Contains("Matrix42.StorageService.Contracts.IStorageService")
+                && details.Contains("System.Web.Http.Description.IApiExplorer");
+        }
+
         private static bool IsJournalReaderMethod(MethodInfo method)
         {
             var methodName = method.Name;