Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Download action changeing by itself

  • 1 reply
  • 1 has this problem
  • 4 views
  • Paskiausią atsakymą parašė kinglumus1

more options

For some reason my default PDF reader keeps being changed to MS Office instead of just opening them in the browser as I directed. I keep having to change the setting in Firefox every couple of weeks (general > applications > PDF). What's causing this?

For some reason my default PDF reader keeps being changed to MS Office instead of just opening them in the browser as I directed. I keep having to change the setting in Firefox every couple of weeks (general > applications > PDF). What's causing this?

All Replies (1)

more options

(Sorry for the late response, Gmail marked it as spam)

My system default is Office 365. Would the system settings change the browser setting, though?