New Outlook Can’t Open PST File

Aspose.Email Product Family
1

Unable to open the PST file in new outlook, PST file is exported using Aspose.Email.

New outlook version details.
Microsoft Outlook Version: 1.2025.617.100 (Production)
Client Version: 20250620014.15
WebView2 Version: 137.0.3296.93 (Stable)
Session ID: 96f0799e-3223-0840-9e3e-9b079f8f4e4e

2

Hello @RCloudDevUser01,

Could you please specify the error you encounter when trying to open the PST file in the new Outlook version?
Also, does the PST file open successfully in other versions of Outlook?

Thank you.

3

Hello @margarita.samodurova

I discovered that new microsoft outlook tries to group messages before displaying them.
So, if you select “Don’t group messages” on the “Conversations” tab, messages from the PST file will be displayed. However, there will still be problems displaying the message body (it won’t be displayed).

Seems, like some mapi properties are required by default for new microsoft outlook client

Aspose Email version 25.8.0.

4

Hello @Ilyaabramau,

Thank you for your observation and for sharing these details.

Could you please share a sample file (or a minimal example) where this issue can be reproduced? That would help us identify it.

5

Hello @margarita.samodurova

I left the feedback in microsoft. You can find realted information here:
https://feedbackportal.microsoft.com/feedback/idea/3e08794b-3ab6-f011-aa44-7c1e5298a4a1

The main idea: the new microsoft outlook requires a ConversationTopic property for rendering messages.

6

Hello @Ilyaabramau ,

Thank you for this valuable information.

1 Like
7

@RCloudDevUser01
We have opened the following new ticket in our internal issue tracking system to add the conversation topic property to a PST message.

Issue ID(s): EMAILNET-41662