diff --git a/src/Umbraco.Core/Extensions/ClaimsIdentityExtensions.cs b/src/Umbraco.Core/Extensions/ClaimsIdentityExtensions.cs
index a604b3e0173e..eef48f1d81d1 100644
--- a/src/Umbraco.Core/Extensions/ClaimsIdentityExtensions.cs
+++ b/src/Umbraco.Core/Extensions/ClaimsIdentityExtensions.cs
@@ -330,7 +330,10 @@ public static string[] GetAllowedApplications(this ClaimsIdentity identity) => i
         var firstValue = identity.FindFirstValue(ClaimTypes.NameIdentifier);
         if (firstValue is not null)
         {
-            return int.Parse(firstValue, CultureInfo.InvariantCulture);
+            if (int.TryParse(firstValue, CultureInfo.InvariantCulture, out var id))
+            {
+                return id;
+            }
         }
 
         return null;