症状

In the View Page Attachment screen, the 'Edit in Office' link for *.docx file attachments does not work with Firefox.

原因

Although WebDAV Launcher Firefox Add-on is installed, it only recognizes *.doc file attachments.

ソリューション

1. In Firefox, click on Tools >> WebDAV Launcher Options.
2. In File Extension, specify docx.
3. In Application Path, specify the path to WINWORD.EXE. In most cases, the same path specified for doc attachments is used.
4. [追加] をクリックします。
5. [保存] をクリックします。