Processign Specified file using the OpenXml library

[XomkaEzWin]

Describe the bug
The attached .docx document cannot be opened or processed using the OpenXml library. The application throws an exception when trying to load it.

Screenshots
N/A – the issue is reproducible programmatically.

To Reproduce
To reproduce the issue, simply run the provided minimal console application:

Repro app: https://drive.google.com/file/d/13xbeKu0psI1QzSlFBK-JDGt7iV-bnD-v/view?usp=drive_link

Problematic document: https://docs.google.com/document/d/1Pr0vArHMqU2-_lGStLN7aCHSU8cAUNse/edit?usp=sharing&ouid=106818609291674481129&rtpof=true&sd=true

Steps to reproduce the behavior:

Download and open the provided console application

Run the application

Observe the exception when trying to open the document

Observed behavior
The document cannot be loaded; an exception is thrown by OpenXml SDK when trying to open the .docx file.

Expected behavior
The document should be successfully opened and parsed by the OpenXml library without exceptions.

Additional context
The document originates from an external source and opens fine in Microsoft Word, but OpenXml SDK fails to open it. Please advise on what might be causing this issue or whether the document is not compliant with expected format standards.

[XomkaEzWin]

Adding Stack trace:
OpenXML package error. FileId: 0, FileName: Fajl_1 (2)
System.InvalidOperationException: Specified part does not exist in the package.
at System.IO.Packaging.Package.GetPart(Uri partUri)
at DocumentFormat.OpenXml.Packaging.OpenXmlPart.Load(OpenXmlPackage openXmlPackage, OpenXmlPart parent, Uri uriTarget, String id, Dictionary2 loadedParts) at DocumentFormat.OpenXml.Packaging.OpenXmlPartContainer.LoadReferencedPartsAndRelationships(OpenXmlPackage openXmlPackage, OpenXmlPart sourcePart, RelationshipCollection relationshipCollection, Dictionary2 loadedParts)
at DocumentFormat.OpenXml.Packaging.OpenXmlPartContainer.LoadReferencedPartsAndRelationships(OpenXmlPackage openXmlPackage, OpenXmlPart sourcePart, RelationshipCollection relationshipCollection, Dictionary`2 loadedParts)
at DocumentFormat.OpenXml.Packaging.OpenXmlPackage.Load(Package package)
at DocumentFormat.OpenXml.Packaging.WordprocessingDocument.Open(Stream stream, Boolean isEditable)
at Edocs.Infrastructure.Services.Conversion.OpenXMLCorrector.FixSharePointFile(MemoryStream stream, IFileLoggerInfo fileLoggerInfo, String extension) in C:\gr\builds\t3_ir4RrT\0\e-docs\edoc\src\Edocs.Infrastructure\Services\Conversion\OpenXMLCorrector.cs:line 30

[mkaszewiak]

Hi @XomkaEzWin thank you for your request. I looked in to the file you have provided and it is malformed.
When you open the package and look in document.xml.rels file you will see 3 references to the files named something like:
Target="embeddings/_________Microsoft_Visio111111111.vsdx"/>
but this files don't exist in your package. To fix the issue please remove those references or include them in the package.
I tested your code with references removed and it succeeded.

Please let me know how this works for you. Thanks

[mkaszewiak]

Closing as issue has been resolved.

[XomkaEzWin]

Hello @mkaszewiak , thank you for fast respond.Would it be possible to configure the Open XML SDK to ignore missing embedded files (e.g., VSDX) referenced in document.xml.rels rather than throwing an error? In our case, we are aware of these missing files and would prefer the process to continue without failing. Is there any setting or recommended approach to gracefully handle such cases?