We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Website does not recognize uploaded file as pdf

more options

A website is rejecting uploaded pdf files with the error message that it is not a pdf file. The site accepts the same files uploaded with IE from the same computer. It also accepts the file uploaded with Firefox from another running Windows 7 Professional.

This happened

Every time Firefox opened

== The first time I tried this was 5/8/10

A website is rejecting uploaded pdf files with the error message that it is not a pdf file. The site accepts the same files uploaded with IE from the same computer. It also accepts the file uploaded with Firefox from another running Windows 7 Professional. == This happened == Every time Firefox opened == The first time I tried this was 5/8/10

All Replies (1)

more options

I think this has to do with the corruption of a mime file. Find the ".ini" file in your Firefox directory and get rid of reference to pdf's.