Camanoislandjq said

I have been trying to update Mozilla since 11/16. Computer says it is outdated.

Where do you see that message?

Which version do you currently have? You can find that on the Troubleshooting Information page, in the first table. Either:

• "3-bar" menu button > "?" button > Troubleshooting Information
• (menu bar) Help > Troubleshooting Information
• type or paste about:support in the address bar and press Enter

It would be expected to have Firefox 50.0.2.

Firefox 50.1.0 was released yesterday, but only a small percentage of users get that update in the first week, "just in case" there are severe problems. It would be very surprised if your computer or security software expect you to have that version.

Some protection programs don't like the update/install stubs. Download Firefox For All languages And Systems {web link}