eml2msg error opening msg in MS Outlook

[chevcheli0s]

After converting eml from thunderbird via eml2msg I get an error when trying to open msg in MS Outlook
Also getting this warning when converting

WARNING: sun.reflect.Reflection.getCallerClass is not supported. This will impact performance.

[lolo101]

Hello @chevcheli0s, and thank you very much for this report!

The JDK emits the warning whenever the getCallerClass method is called. However, this should not be related to the error.

Can you provide some context about the error?

• Can you provide a screenshot if the error pops up a dialog?
• Do you have a textual log of the error?
• Does the error completely prevent the message from being displayed?
• Can you provide the original EML message or another EML message that triggers the error?

Thank you very much for your help

[chevcheli0s]

• 
• no
• yes
• test.zip

[lolo101]

I managed to open the file "test.msg" in Outlook (outlook.live.com) without any issue.
You have the issue with the Desktop version of Outlook, right? Have you tried the browser version?

[chevcheli0s]

I managed to open the file "test.msg" in Outlook (outlook.live.com) without any issue. You have the issue with the Desktop version of Outlook, right? Have you tried the browser version?

I haven't tried the browser version since most employees at my work use the desktop version of Outlook.

[lolo101]

Hi @chevcheli0s

I opened the .msg file with the following version of the desktop client:

Version de Microsoft Outlook : 1.2025.430.200 (Production)
Version du client : 20250425004.13
Version WebView2 : 128.0.2739.79

Can you tell me the version of your Outlook client?

Thank you very much for your help

[chevcheli0s]

Hi @chevcheli0s

I opened the .msg file with the following version of the desktop client:

Version de Microsoft Outlook : 1.2025.430.200 (Production)
Version du client : 20250425004.13
Version WebView2 : 128.0.2739.79

Can you tell me the version of your Outlook client?

Thank you very much for your help