diff --git a/src/Umbraco.Core/Security/BackOfficeSignInManager.cs b/src/Umbraco.Core/Security/BackOfficeSignInManager.cs
index 71bd2474cd..9a6f9cceb3 100644
--- a/src/Umbraco.Core/Security/BackOfficeSignInManager.cs
+++ b/src/Umbraco.Core/Security/BackOfficeSignInManager.cs
@@ -191,6 +191,7 @@ namespace Umbraco.Core.Security
 
             //track the last login date
             user.LastLoginDateUtc = DateTime.UtcNow;
+            user.AccessFailedCount = 0;
             await UserManager.UpdateAsync(user);
 
             _logger.WriteCore(TraceEventType.Information, 0,
@@ -231,4 +232,4 @@ namespace Umbraco.Core.Security
             return null;
         }
     }
-}
\ No newline at end of file
+}