diff --git a/src/GeneralTools/DataverseClient/Client/Auth/AuthProcessor.cs b/src/GeneralTools/DataverseClient/Client/Auth/AuthProcessor.cs
index b5b579c..46ad969 100644
--- a/src/GeneralTools/DataverseClient/Client/Auth/AuthProcessor.cs
+++ b/src/GeneralTools/DataverseClient/Client/Auth/AuthProcessor.cs
@@ -183,7 +183,7 @@ internal async static Task<ExecuteAuthenticationResults> ExecuteAuthenticateServ
                             {
                                 ClientId = clientId,
                                 EnablePiiLogging = true,
-                                RedirectUri = redirectUri.ToString(),
+                                RedirectUri = redirectUri?.ToString(),
                                 LogLevel = LogLevel.Verbose,
                             })
                         .WithAuthority(Authority)