You can download the complete installation package here: http://www.mozilla.com/en-US/firefox/all.html

Personally, I'm not too "keen" on the stub-installer package.

Thanks for your help, but it "failed Network..."

Well, the Mozilla download servers are probably very busy today. At 4 am local time (CDT) I had no problems updating to Firefox 33, but at 8 am I had major problems updating both Nightly and Aurora versions. Multiple tries for both, before one went thru and then the other a few minutes later.

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test.

• http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/