Emile

I have rolled back Windows 10 RS5 to RS4 on my main desktop PC. Both Firefox and Thunderbird now work fine on that machine, without the exclusions that I had needed to set up for these programs in NOD32's Protocol Filtering. As an aside : on my work laptop, Windows 10 RS5 had completely wrecked any audio functionality. Rolling the laptop back to RS4 restored that (fortunately, its Thunderbird's functionality had not been affected). Don't you just LOVE Micro$oft... IMHO they have really shot themselves in the foot with this "Creators Update", but since their systems are so widespread I would suspect that they will just be able to shrug it off and get away with it ?

Yes that is correct as of now. After reading itman's reply I will continue with the exclusions for now.

Sorry : I was not suggesting for one moment that ESET was to blame, because until the Windows update took place end of last week, both Firefox and Thunderbird were working fine for me. Thanks for your reply, I will keep the exclusion settings for now and just try without them from time to time until I can see that Micro$oft has sorted out the problems they caused.

Sorry, but I still don't see a reply to my question as to whether or not the above is safe to do. Anyone ?

Unfortunately my desktop PC already updated to version 10.0.17763.1 (Win10 RS5) last Friday. Since then, Firefox wouldn't connect to a number of my bookmarked websites and Thunderbird wouldn't download new emails. Both were working perfectly until this weekend. I hope that this problem goes away once Micro$oft get their act together. In the meantime I have added Thunderbird and Firefox to the list of Excluded Applications under Protocol Filtering (which is still enabled). That has fixed the problem for now but is this safe ? Sorry if this is a dumb question but I am not an expert by any means. Thanks for any advice.