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I get the message, "system infected: Adware Activity 2" using Firefox, but not using Explorer. Any ideas?

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  • Last reply by philipp

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The above message is from Symantic Endpoint Protection. I have run virus scans 2 x and I have removed Firefox, then re-downloaded and re-installed. THe message persists.

The above message is from Symantic Endpoint Protection. I have run virus scans 2 x and I have removed Firefox, then re-downloaded and re-installed. THe message persists.

Chosen solution

hello, you may have malicious addons present. please perform all these steps:

  1. reset firefox (this will keep your bookmarks and passwords)
  2. afterwards go to the firefox menu ≡ > addons > extensions and in case there are still extensions listed there, disable them.
  3. finally run a full scan of your system with different security tools like the free version of malwarebytes and adwcleaner, as they are specialised in adware which common anti-virus software might not even detect as threats.

Troubleshoot Firefox issues caused by malware

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Chosen Solution

hello, you may have malicious addons present. please perform all these steps:

  1. reset firefox (this will keep your bookmarks and passwords)
  2. afterwards go to the firefox menu ≡ > addons > extensions and in case there are still extensions listed there, disable them.
  3. finally run a full scan of your system with different security tools like the free version of malwarebytes and adwcleaner, as they are specialised in adware which common anti-virus software might not even detect as threats.

Troubleshoot Firefox issues caused by malware