Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

Every time I open Firefox, I get a message saying that Mozilla wants to make changes to my computer on firefox.exe. What is happening and how can I stop it?

  • 3 replies
  • 5 have this problem
  • 1 view
  • Last reply by cor-el

more options

Program name: Firefox Verified publisher: Mozilla Corporation File origin: Hard drive on this computer Program location: C:\Program Files (x86)\Mozilla Firefox\firefox.exe Certificate issued to: Mozilla Corporation Issued by: Thawte Code Signing CA - G2 Valid from 10/6/2011 to 10/29/2012

Program name: Firefox Verified publisher: Mozilla Corporation File origin: Hard drive on this computer Program location: C:\Program Files (x86)\Mozilla Firefox\firefox.exe Certificate issued to: Mozilla Corporation Issued by: Thawte Code Signing CA - G2 Valid from 10/6/2011 to 10/29/2012

Chosen solution

You're welcome

Read this answer in context 👍 0

All Replies (3)

more options

Check that you do not run Firefox as Administrator.

Right-click the Firefox desktop shortcut and choose "Properties".

Make sure that all items are deselected in the "Compatibility" tab of the Properties window.

  • Privilege Level: "Run this program as Administrator" should not be selected
  • "Run this program in compatibility mode for:" should not be selected
more options

That worked! The compatibility mode was selected. Thanks.

more options

Chosen Solution

You're welcome