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Excel file generated using template reports error

bug

Status: Open.

#1824 In nissl-lab/npoi;

· azi03 opened on Jul 13, 2026

Why does SXSSF need autosizeColumn?

Status: Open.

#1821 In nissl-lab/npoi;

· Inree opened on Jun 30, 2026

CreateTOC NullReferenceException

bug

Status: Open.

#1820 In nissl-lab/npoi;

· camus0109 opened on Jun 15, 2026

NPOI.POIFS.FileSystem.NotOLE2FileException: Invalid header signature; read 0x0000000000000000, expected 0xE11AB1A1E011CFD0

bug

Status: Open.

#1818 In nissl-lab/npoi;

· HHobeck opened on Jun 5, 2026

Add ForceFormulaRecalculation method for IWorkbook

enhancement

Status: Open.

#1817 In nissl-lab/npoi;

· santo998 opened on Jun 3, 2026

Side effect in RGBWithTint

bug

Status: Open.

#1816 In nissl-lab/npoi;

· Inspirateur opened on May 28, 2026

IronXL Deep Investigation

Commercialcommercial featurecommercial feature

research

Status: Open.

#1810 In nissl-lab/npoi;

· tonyqus opened on Apr 23, 2026

Microsoft Word and Microsoft Excel cannot open generated documents in version 2.8.0

file_errorfile format generation/writing issuefile format generation/writing issue

regression

xssf

xwpf

Status: Open.

#1801 In nissl-lab/npoi;

· sergeidorodnov opened on Apr 15, 2026

·  

NPOI 2.8.1

OpenCode AI

Status: Open.

#1799 In nissl-lab/npoi;

· tonyqus opened on Apr 11, 2026

Formula evaluation fails (ErrorCode 15) when using TEXT() function with date

bug

formula

Status: Open.

#1787 In nissl-lab/npoi;

· SDNA-ALP opened on Apr 3, 2026

·  

NPOI 2.8.1

Introduction to Open Source Maintainence Fee license

Commercialcommercial featurecommercial feature

Status: Open.

#1785 In nissl-lab/npoi;

· tonyqus opened on Apr 3, 2026

·  

NPOI 2.8.1

Developer Friendly API Implementation

api

Status: Open.

#1775 In nissl-lab/npoi;

· tonyqus opened on Mar 31, 2026

·  

NPOI 2.8.1