I am using contact form 7 plugin in my website. In my Careers page I have a form to upload resumes and send as an attachment in email.

When I upload .doc file it is working fine, but when I try to upload .docx file console is showing errors like err_connection_reset and failed to load response from server something like that.

What is the workaround for this?

closed as off-topic by Mark Kaplun, Howdy_McGee Jul 12 '17 at 14:41

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You need to add docx as an accepted filetype in the CF7 shortcode for your upload field, eg:

[file your-file filetypes:pdf|doc|docx|odf|rtf]

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