Moved to Malware Discussion > Home User Assistance as a precaution and for better support.
That first warning Facebook gave should have been a cue to use some extra tools to scan for malware. Antivirus products are all good but are not 100% guaranteed to block everything.
Fortunately for you, you at least have Windows Defender protecting you at the moment. In 10 it is an antivirus. The Kaspersky scan was probably only a cursory online scan.
See the last link below. Try running GetSusp to hopefully identify it and send it to the labs. If you want to be notified by the labs of the result insert your email under Preferences before running it.
Then run a scan with MalwareBytes Free, make sure you read the instructions on how to keep it free and if this infection prevents download, note that it can be installed, updated and run all in Safe Mode with Networking.
See this link: Windows 10 Forums
Or you can use the Chameleon method outlined in that link below.
Once you've cleaned the infection your McAfee software should be configurable.
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BTW I just read your line "on Linux and MacIntosh"... these instructions are all written for Windows.
Hi Peter: thank goodness for your response. You helped me out many years ago on another McAfee-related issue, which I subsequently blogged positively about.
The original issue is in Windows, so your instructions are perfect. I'll give them a go now. I only went on Mac and Linux to see what was going on, and found out that the mere act of posting a McAfee link would result in a virus warning.
Glad to help, yes I think I remember that occasion. I'm getting a bit long in the tooth as they say, but still trying to help where I can. . What I failed to mention although it is listed first thing in that last link above - you could try to wind back the clock to before it all happened using System Restore.
Hi Peter: well, I for one hope you stick around because you're incredibly helpful to us.
Getsusp is all clean, and Malware Bytes reported a few PUPs, but I already knew about them (and in at least one case intentionally installed).
Malware Bytes seems to have restored McAfee as the antivirus program. Windows hasn't told me but at least the notifications about an unprotected system aren't coming up any more.
Facebook, of course, is still blocking me from using its site if I go to Windows, so I am presently trying the System Restore to see what happens.
Thank you again! I'll update this thread after the Restore.
Hi Peter: the System Restore failed, saying an antivirus program was running, preventing it doing its job. I suspect it was the Kaspersky scan and not McAfee, as I have restored this machine once (in mid-November) and it was very speedy that time.
The good news is that McAfee is back as the rightful security program, so your understanding that Malware Bytes would sort it out was correct.
Should I remove Malware Bytes now that it has done its job?
I then proceeded to delete Malware Bytes from C:\Users\USERNAME\AppData\Local\Temp\FBScanner_331840299, where it resided, deleted all cookies mentioning Facebook and Kaspersky, and I was able to reenter Facebook.
It looks like the antivirus that Facebook gets you to use is the virus itself.
Thank you, Peter, your advice was incredibly helpful once again and my system seems to be back to normal.
If I may add, you can keep Malwarebytes (Free) onboard as a compliment to your McAfee Protection. Simply update it before scanning, and remember to not Activate or accept the Free Trial. Glad to hear you are up and functioning properly.
All the Best,
I've never experienced that Facebook/Kaspersky thing so haven't any idea what it's about, I suggest a Google search on that matter. Meanwhile go to Kaspersky's website and look for their removal tool and run it, can't harm.
Hi CD: thank you for your advice, I will keep it on my system in that case.
There are still a few tiny issues and I’m coming to the conclusion it’s a Facebook account databasing error somewhere (given the warning messages on every platform). But the important thing is I can now access Facebook on my main Windows 10 PC.