If an email attachment has a question mark (?) or a plus sign (+) in the file name, you may not be able to open the attachments sent. In this case, you’ll have to ask the sender to correct the filename and resend the email to you.Why is Outlook Web App not downloading attachments?
Follow these workarounds for resolving the issue where your Outlook on the Web attachments are not getting download. Run Outlook on the Web on a Different Web Browser. Try Downloading Attachments in Zip File Format. Run Outlook on the Web Light Version. Switch Back to the Old Outlook on the Web App Interface. Change Google Chrome Settings.How to fix email attachment not opening in Windows 10?
[Solution] Email Attachment not Opening 1 Right-click on Start and Select Command Prompt (Admin) 2 Copy this command "%programfiles%\Microsoft Office 15" /grant *S-1-15-2-1: (OI) (CI)RX. 3 Now paste the command in command prompt. 4 Press Enter. See More....Why is attach to email not working in Acrobat DC?
In Acrobat DC or Acrobat Reader DC, when you try to use the Attach to Email feature, nothing happens. Try the following solutions to resolve the problem. To automatically update from Acrobat DC or Acrobat Reader DC, choose Help > Check for updates, and then follow the steps in the Updater window to download and install the latest updates.