"Unknown File Format" Error when Loading an AIP Protected PPTX in C#

Aspose.Slides Product Family
,
1

Recently we have a problem caused probably to interaction with AIP: Powerpoint file protected with AIP seem not to be recognized anymore as ppt files.
Code snippets:
var bytes = File.ReadAllBytes(…path+ file.pptx);
var presentation = new Aspose.Slides.Presentation (new MemoryStream(bytes));

error: Unknown file format

2

@informationtechnology_xy_net,
Welcome to our community.
Could you share the presentation file for investigating the issue, please? If you specified the version of Aspose.Slides library, it would be great.

3

Dear Andrey,

Can you please tell us a secure mode to transfer the file? Our pptx file is protected with AIP label.

Our Aspose version is: Aspose.Slides for .NET 18.12.0

For any further information, in cc you can find the contact of our colleague Valerio that can give you more details.

Thanks

Cristiano

4

Attached you can find file

Thanks

test_Aspose.zip (56.4 KB)

5

@informationtechnology_xy_net,
Thank you for the presentation sample. To my regret, the Aspose.Slides library doesn’t support Azure Information Protection yet (even v21.1). I have linked this topic with the appropriate task with ID
SLIDESNET-40543 from our tracking system. You will be notified when the feature is implemented.

You can send private files to a personal email of support in the future (click on a user name and “Message” button).