diff --git a/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php b/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php
index aedce01bcd842902d8c173c1329b481771eb4094..b79c794a8c564e46dda4dc46e7af74dbec3cf181 100644
--- a/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php
+++ b/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php
@@ -48,6 +48,9 @@ abstract class AbstractExceptionHandler implements ExceptionHandlerInterface, Si
         1616175847, // Frontend login request is rate limited
         1436717275, // Request with unsupported HTTP method
         1699604555, // Outdated __trustedProperties format in extbase property mapping
+        1517949792, // The IP address of your client does not match the list of allowed IP addresses
+        1517949793, // Backend access by browser is locked for maintenance
+        1517949794, // Backend and Install Tool are locked for maintenance
     ];
 
     public const IGNORED_HMAC_EXCEPTION_CODES = [