After removing PUP other browsers than Edge will not start

0 votes
asked Jan 25, 2016 by Dick (150 points)

I noticed a persistent ad of ReImage in my Firefox browser, so I ran Malwarebytes anti-malware program which removed some 70 files and keys of PUP.Optional.Wajam to quarantaine.

After this my Firefox does not come up, there is only a background process in the taskmanager. I installed Chrome which only gives errors like ERR_CONNECTION_RESET, only Edge works ok.

I switched from wifi to cable connection, no result. I adjusted the MTU for this adapter, no result.

Can you please help me out to get my Firefox working again?

Additional Details Dell Latitude E6540, Win10 with Bitlocker activated.
commented Jan 25, 2016 by kevinarrows (5,110 points)
Are you running any anti virus or malware softwares other then malwarebytes?
commented Jan 25, 2016 by Dick (150 points)
Yes, I'm running Sophos.
commented Jan 25, 2016 by kevinarrows (5,110 points)
Please disable Sophos completely and then try.
commented Jan 25, 2016 by Dick (150 points)
Indeed the Sophos WebFilter was blocking FireFox and Chrome, disabling this service made them able to run.
Next question is how to let Sophos allow them running. I seem to have no acces in the Sophos GUI, the option Web protection is grayed out.
commented Feb 16, 2016 by JannaK (100 points)
I should say that Wajam is a malware which should be removed from your computer totally. Sometimes it could make users be unable to use the browser smoothly.
Here is the info about it:

1 Answer

0 votes
answered Jan 25, 2016 by kevinarrows (5,110 points)
selected Jan 26, 2016 by Dick
Best answer
I haven't used Sophos, and i am not a fan of it either. An anti-virus should be smart enough to differentiate and understand what to block and what not. I would suggest that you speak to Sophos if you need help regarding it's configuration, but if you take my advise, then i'd suggest using AVG or Norton.
commented Jan 25, 2016 by Dick (150 points)
Sophos is the company choice, I've no say in that, but I'll ask how to use this service.
Thanks a lot anyway!
commented Jan 25, 2016 by kevinarrows (5,110 points)
In that case, i beleive the policies are pushed by the administrator of your network? If not, then this may help:

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