I am unable to access the settings for AOS in Firefox (currently using v47.0.1). So, I did a search online & eventually came upon this:https://forum.avast.com/index.php?topic=146635.msg1064511#msg1064511. So, I went to the directory (https://ftp.mozilla.org/pub/firefox/releases/26.0/win32/en-US/) for the different versions & languages & downloaded the installer for v26.0. I decided to check the data for the installer & it comes up with “File version 4.42.0.0”. So, is there no longer an installer for v26.0?
- Remove AOS from Firefox
- Run a repair for avast
See if that solves it.
Probably should have added a bit more details…
I currently am using Avast Free Antivirus 10.4.2233. I’ve tried updating the program in the past, but, for whatever reason, it wouldn’t update, so I decided to keep Avast at 10.4.2233. And, when Firefox has recently updated to a newer version, when I go to the extensions section of Firefox, for the AOS listing, there is text saying “Avast Online Security could not be verified for use in Firefox. Proceed with caution”. That’s when I started looking & came upon a page that gave instructions for how to bypass unsigned extensions by changing the xpinstall component in “about:config” from true to false (which I did). So, after changing that xpinstall in config from true to false, I was once again able to use AOS. However, since updating Firefox from 26 to a newer version, when I attempt to open AOS’s setting from the browser plugin, the settings page for AOS doesn’t show up.
So, with using Firefox v47.0.1 & Avast Free Antivirus 10.4.233, what should I do about not being able to access AOS’s settings from the browser plugin? Should I try downgrading Firefox to v26? Any help is appreciated.
Update both avast and Firefox to the latest versions.
So, pretty much the only solution to my problem is to use up-to-date versions of both programs? Otherwise, I’m stuck with what I currently have?
Sounds like your CPU doesn’t support SSE2.
Best is to update both applications, not just for functionality but also for security.
Check if your CPU supports the SSE2 instruction set.
You can look up the specifications at the manufacturers website or use something like CPU-Z.
Did you try as I suggested ?
Well, I checked the system information concerning the CPU for the computer that the problem is on & said computer uses an AMD Athlon CPU. So, I went to AMD’s website and, as it turns out, there is NO listing for the AMD Athlon, only the newer AMD CPUs.
So, I then did a Google search to find out if the AMD Athlon supports SSE2. Through that search, I came upon this thread on a message board. According to the first post, under “AMD”, then “SSE2 CPUs”, the listing does NOT include the AMD Athlon.
So, I am taking that to then mean that the AMD Athlon CPU in the problem computer does indeed NOT support SSE2, meaning Asyn’s post seems to be correct.
Now, I don’t know if it means anything, but within at least the last couple years or so, when I’ve attempted to install the newest versions of certain programs (Skype, MalwareBytes Anti-malware, Adobe Flash Player, etc.), right after the installer program gets going, it crashes.
Now, I have since uninstalled Skype from the problem computer, as I’ve installed it on another, faster computer I use; but, the only way I was able to use Skype on the problem computer was to install an older version of it, then disable Skype Updater in the Windows Services explorer window, as well as turning off automatic updates within the program itself.
As far as MBAM, I had to install an older version of that as well, then, as soon as its update service showed up in the Windows Services explorer window, I disabled that.
As far as Flash Player, I had to end up using an offline installer to place that program on the problem computer.
Is this of any help to you ???
https://forum.avast.com/index.php?topic=164936.msg1322691#msg1322691
I went to AMD's website and, as it turns out, there is NO listing for the AMD Athlon, only the newer AMD CPUs.Look again. All CPU's that AMD ever made are listed on their website, including the Athlon series > http://www.amd.com/en-gb/products/processors/desktop/athlon
As you had to use a older version of MBam it is a very strong indication that you have a old(er) Athlon cpu that doesn’t support the SSE2 instruction set.
Most probably not Bob, as he has this version already installed. 
OK, my bad; I suppose I should have worded my statement differently. What I meant was, when I looked through the AMD Athlon line on AMD’s website, all I found was the newer AMD Athlon CPUs; it would appear that AMD no longer carries the much older Athlon CPUs, like the one the problem computer uses. Now, I am unsure as to whether or not AMD still provides support for the older Athlon CPUs (again, like the one the problem computer uses).
And, the thing is, when I checked the system info, as well as the device manager for the problem computer, under both, the CPU for the problem computer shows up as “AMD Athlon™ Processor”. So, as I stated before, judging by the posting on that other message board, I am being led to believe that the older AMD Athlon CPU that the problem computer uses does NOT support SSE2.
And, as far as me not updating Firefox to a newer version & sticking with v47.0.1, I use that version because there was a point within the last couple months or so when the anti-virus program’s automatic update stopped working (for whatever reason), so I had to go through, download the latest virus definition update, & install it manually. The only way I was guaranteed to be able to get the latest update was by getting a download manager add-on installed for FF v.47.0.1. And, the thing is, according to the download manager’s website, it sounded like the download manager add-on would no longer work with newer versions of Firefox.
So then, my question is, what do I do about the situation concerning Avast Online Security as it pertains to using Firefox v47.0.1 & Avast Free Antivirus v10.4.2233? Or, is there no solution & I’m essentially stuck in my current situation until a newer Athlon CPU is installed in the problem computer?
I tend to stay away from the manufacturers site when hunting the specs for a CPU on my system/s. I just use a little tool CPU-Z http://www.cpuid.com/softwares/cpu-z.html.
It is a Zip file (for a stand alone program that doesn’t have to be installed as such) and provides lots of information on your CPU.
I tend to stay away from the manufacturers site when hunting the specs for a CPU on my system/s.And guess where tools like that get their info from...
I don’t care where they get the info from, it saves me the hassle of going looking for it, that’s the whole point. Not to mention it also gives other information as you can see from the Tabs in my image, even less hunting.
OK, so, after downloading the CPU-Z zip file from that website & unzipping the contents to a folder on the hard drive, how would I use the CPU-Z program to find out which instructions the problem computer’s AMD Athlon CPU has/supports?
Erm, run it.
Well, after running CPU-Z & looking at the instructions section, it lists MMX(+) & 3DNow!(+). Not exactly sure what the “(+)” means.
If SSE2 isn’t listed, it isn’t supported.
So then, what does that mean about the situation concerning Avast Online Security as far as using Firefox v.47.0.1 & Avast Free Anti-virus 10.4.2233?