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Firefox 5 is apparently incompatible with F-Secure anti-virus; F-Secure repeatedly pops up "Changed Application" messages; How do I restore my previous version of Firefox?

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  • 70 have this problem
  • 8 views
  • Last reply by jscher2000

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I just installed Firefox 5. Unfortunately, F-Secure's "Application Control" now repeatedly pops up "Changed Application" messages in an endless string. It will not accept my attempts to "Allow" the new version of Firefox. Since Firefox 5 is not compatible with F-Secure, I must return to my previous version of Firefox. I am very disappointed that you have put me to all this trouble. How do I delete Firefox 5 and return to the previous version of Firefox?

Chosen solution

okay new update for firefox 5 was released today

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I have F-Secure and today updated Firefox from 4.0.1 to 5.0, and then got this same problem with an endless string of messages from F-Secure. For me, the Firefox update was not a good thing. I removed the updated Firefox 5 from my computer (XP), and run Regedit, searched for the key Firefox and removed most items. Then I installed Firefox 5, and no more F-Secure messages are seen. Everything ok.

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I don't know F-Secure, but can you go in and obliterate its memory of Firefox 4 so it thinks Firefox 5 is a new application? Perhaps then it won't get so agitated.

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"F-Secure repeatedly pops up Changed Application" So how is this Firefox's fault? Shouldn't you write to F-Secure so they fix that?

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i had this problem, too when i updated firefox 3 to 4. but then after a few days it has worked. maybe it was an update from f-secure, don't know. I hope there will be a new update

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F-Secure has said update will be released probably on 08.07.2011

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^ That is nice of F-Secure to fix their stuff for Firefox 5 (which was released on 06-21) in early August, after Firefox 6 is released and just weeks before Firefox 7 is released.

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what early august? damn it!

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Chosen Solution

okay new update for firefox 5 was released today

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where can I find it please????

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Latest news: FF 5.0 & Browsing Protection - F-Secure Community

where can I find it please????

Try closing Firefox, updating from inside the F-Secure product, then restarting Firefox. Does that work?