Are you trying to open the attachment on your Windows 10 phone or Windows 10 Desktop?
Which email account you are using like Gmail/Yahoo?
Is this happening with all emails with the attachments?
Try to open other emails with attachment, and see if that works.
I am using Windows 10 phone, it ist happening with all emails, independent mails system. I am using Mnet, and telefonica. It worked bevor one of the latest upgrades without any problems.
Remark: Also Office Documents cannot be opened.
Installed Adobe Reade is Version 16,00 Build 158859
Die Datei kann nicht erkannt werden, da die Endung nach dem Punkt (*.xxx) nicht erkannt wird.
restaurar todo normal porque es una literatura publica
Could you please try the following step and see if that resolves the issue:
Tap one of the pdf files>select Acrobat Reader when asked to open with.
I am having similar issues but not getting the chance to go to open it with