From 2c06688d579df05019d7b418d561c42046bb5e66 Mon Sep 17 00:00:00 2001
From: Marko Lahma <marko.lahma@finbiosoft.com>
Date: Wed, 12 Apr 2023 11:08:02 +0300
Subject: [PATCH] Skip WINDOW2 validation when reading possibly non-compliant
 XLS

---
 main/HSSF/Model/RecordOrderer.cs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/main/HSSF/Model/RecordOrderer.cs b/main/HSSF/Model/RecordOrderer.cs
index ce55411a0..fbf825966 100644
--- a/main/HSSF/Model/RecordOrderer.cs
+++ b/main/HSSF/Model/RecordOrderer.cs
@@ -434,8 +434,9 @@ public static bool IsEndOfRowBlock(int sid)
                 case DVALRecord.sid:
                     return true;
                 case EOFRecord.sid:
-                    // WINDOW2 should always be present, so shouldn't have got this far
-                    throw new InvalidOperationException("Found EOFRecord before WindowTwoRecord was encountered");
+                    // WINDOW2 should always be present, but there can be files that are non-compliant to spec
+                    // which are automatically fixed when saved again using Excel, so ignoring the problem when reading
+                    return true;
             }
             return PageSettingsBlock.IsComponentRecord(sid);
         }