If you are unable to open PDF attachments in Yahoo Mail, first try restarting your computer or device. Other programs might be interfering with Yahoo's ability to access your PDF reader program ...

Non of the suggested fixes correct this problem for me. I have Windows 8.1 and IE 11. I’ve tried everything and nothing will allow a pdf to open in IE.

If you cannot open exe or lnk files, learn how to reset, repair, restore broken EXE or LNK file association in Windows. Use FixExec or apply this fix.

PDF files are typically unable to be edited, which makes them great for retaining formatting, ... Open the PDF that you want to convert. Make sure you are using Adobe Acrobat to open the PDF. 2.