WIndows 10 mail app - some attachments can't download

[Kiertzner]

Hi


Windows 10 mail app.


If I open an e-mail with a PDF attachment the Mail app can download the attachment. But my p12 or p7s certificate files can't be downloaded.


I receive this error: "We couldn't download one or more of the attachments. Please try again later"


Where can I control which attachments to block or allow in Windows 10 Mail app?


The webmail and iPhone mail app shows ALL attachments. So It is not the e-mail account or Exchange server that are the problem.


Thanks


/Peter

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