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Well, I'll ask the obvious question: &nbsp;Are you an admin on the Mac?<br />
<br />
Assuming you are, I would:<br />
- &nbsp;Download a fresh copy of Firefox<br />
- &nbsp;Trash the old one<br />
- &nbsp;Install the new one
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Well, I'll ask the obvious question:  Are you an admin on the Mac?

Assuming you are, I would:
-  Download a fresh copy of Firefox
-  Trash the old one
-  Install the new one

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yes I am the only user and admin. &nbsp;How do I trash the old one and will I lose anything?
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yes I am the only user and admin.  How do I trash the old one and will I lose anything?

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Odd, do you have problems updating other applications as well or just this one?
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Odd, do you have problems updating other applications as well or just this one?

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You both were very helpful.<br />
<br />
Thanks!
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I have had &nbsp;my FireFox browser set to update automatically for years. &nbsp;Recently, I keep getting this message when it wants to update<br />
<br />
<a href="https://gyazo.com/02a21e501ac4b1439b987a79ce190a9b" rel="ugc">https://gyazo.com/02a21e501ac4b1439b987a79ce190a9b</a>
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I have had  my FireFox browser set to update automatically for years.  Recently, I keep getting this message when it wants to update

https://gyazo.com/02a21e501ac4b1439b987a79ce190a9b

Firefox Mac Won't Update

Web browsers are applications used primarily to display documents, files and media from the Internet, identified by a Uniform Resource Identifier (URI) that can be a page, image, video or other file. Some browsers require the use of add-ons or extensions to safely render the information they receive; others have systems built into them to perform the same functions.

Web Browsers

Mac OS X is the desktop operating system from Apple Inc., found on Macintosh computers. OS X consists of a Mach/BSD-based kernel, operating system interfaces primarily based on FreeBSD and additional frameworks (written in C, C++ and Objective-C providing user interface and application-level services.

Mac OS X

Software is any set of instructions that directs a computer to perform specific tasks or operations. Computer software consists of programs, libraries and related non-executable data (such as documentation). Computer software is non-tangible, contrasted with computer hardware, which is the physical component of computers. Software written in a machine language is known as "machine code". However, in practice, software is usually written in high-level programming languages than machine language. High-level languages are translated into machine language using a compiler or interpreter or a combination of the two.