Skip to content

Conversation

@dependabot
Copy link

@dependabot dependabot bot commented on behalf of github Jan 7, 2026

Updated DocumentFormat.OpenXml from 3.3.0 to 3.4.1.

Release notes

Sourced from DocumentFormat.OpenXml's releases.

3.4.1

Added

  • Added MediaDataPartType.Mp4 to support MP4 video media parts in presentations and documents (#​1866)
  • Updated bundled Open XML schemas to the Q3 2025 Office release, enabling newer document and presentation features (#​1963)

Changed

  • Reduced JIT and AOT size and improved document load performance by removing the generic builder pattern from element metadata creation (#​1842, #​1843)
  • Optimized FromChunkedBase64String to significantly reduce allocations and improve throughput when decoding chunked base64 content (≈2.4× faster, ≈70% less memory) (#​1868)

Fixed

  • Switched to XmlDOMTextWriter instead of XmlWriter.Create to correctly handle serialization of certain XML content (#​1869, #​1961)
  • Added a clear error when attempting to open encrypted documents that the SDK cannot process (#​1635, #​1969)
  • Improved exception messages when required package parts are missing by including the name of the missing part (#​1971, #​1974)

Documentation

  • Clarified the README SDK description and simplified the note on 3.0.0 breaking changes (#​1858)
  • Documented that disposing a package with AutoSave set to false does not persist changes (#​1873)
  • Removed the PowerPoint modern comments sample, which now lives on learn.microsoft.com (#​1861)

Thanks to the following for their contributions:

@​QuocDatHoang
@​Varorbc

Commits viewable in compare view.

Dependabot compatibility score

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.


Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

  • @dependabot rebase will rebase this PR
  • @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
  • @dependabot merge will merge this PR after your CI passes on it
  • @dependabot squash and merge will squash and merge this PR after your CI passes on it
  • @dependabot cancel merge will cancel a previously requested merge and block automerging
  • @dependabot reopen will reopen this PR if it is closed
  • @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
  • @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
  • @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
  • @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
  • @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

@dependabot dependabot bot added the .NET Pull requests that update .NET code label Jan 7, 2026
---
updated-dependencies:
- dependency-name: DocumentFormat.OpenXml
  dependency-version: 3.4.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
@dependabot dependabot bot added dependencies Pull requests that update a dependency file .NET Pull requests that update .NET code labels Jan 7, 2026
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

dependencies Pull requests that update a dependency file .NET Pull requests that update .NET code

Projects

None yet

Development

Successfully merging this pull request may close these issues.

1 participant