Unable to Open Attachments in Outlook Express – Ultimate Solution

Have you correctly checked these settings Outlook Express-> tools->options->security tab->uncheck because these settings must be Uncheck as it block images or other HTML content that could contain a virus

What happens? Is the paperclip icon greyed out? Does it give any error message when you try and launch the attachment.

Have to check whether there is enough free disk space on your hard disk to save attachments

You can do one thing right click on the attachment and save it to your desktop by double click on it. For some reason, some attachments cannot open within the email, but will open from your hard drive.

I think you should try opening your attachments using some tool. You can try any available tool in market

One of my friend tried this tool. He also faces the same problem as you are facing now. You can try “DBX Converter” tool.

Yes don’t worry this is the perfect tool to open and view your attachment and has designed with so many other features also.

You can download this tool from its official website. Or you can click this link
https://www.systoolsgroup.com/dbx-converter.html