diff --git a/apps/dav/lib/CalDAV/Reminder/ReminderService.php b/apps/dav/lib/CalDAV/Reminder/ReminderService.php
index d6901cc4fb03f..b33bc8a175a72 100644
--- a/apps/dav/lib/CalDAV/Reminder/ReminderService.php
+++ b/apps/dav/lib/CalDAV/Reminder/ReminderService.php
@@ -44,6 +44,7 @@
 use Sabre\VObject\InvalidDataException;
 use Sabre\VObject\ParseException;
 use Sabre\VObject\Recur\EventIterator;
+use Sabre\VObject\Recur\MaxInstancesExceededException;
 use Sabre\VObject\Recur\NoInstancesException;
 use function strcasecmp;
 
@@ -247,6 +248,10 @@ public function onCalendarObjectCreate(array $objectData):void {
 				// instance. We are skipping this event from the output
 				// entirely.
 				return;
+			} catch (MaxInstancesExceededException $e) {
+				// The event has more than 3500 recurring-instances
+				// so we can ignore it
+				return;
 			}
 
 			while ($iterator->valid() && count($processedAlarms) < count($masterAlarms)) {