Firefox Community Forum

I have over 100 open tabs spread over 4 Mac desktops. I can no longer access ANY of them after upgrading to macOS Tahoe 26 and installing ESET Cyber Security Pro. I've used ESET with Firefox for many years without ANY problems. But now I have to choose between uninstalling ESET and being unprotected in order to use Firefox AT ALL. Every single webpage is blacked out with the message below. ESET support says that Firefox needs to issue an update to fix this problem.

The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem.

All of a sudden when i sign in to Amazon I get this box: Windows Security: Please sign in to amazon .com: This request comes from Firefox.........: Never asked for it how do I turn it OFF?? I have no2FA in either Amazon or Firefox but all of a sudden i need to enter a Security Code.

After instalation Eset Smart Security 18.2.18.0 with full security browsers my Firefox is run only in read-only mode. If I will be disable option Security browser and run Firefox that's working. Next I will be enable option Security browser then Firefox starts with green frame. After close Firefox and next run then starts read-only mode. Eset Team is not fair play becouse resolving problem only disable option Security browser. So why is there an option that prevents Firefox from launching? All my portable browsers without Eset Security working without any kind of problems, for example Tor, Opera.

I'm receiving this message The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem.

How to manage browser settings to prevent the following:

Hmm. We’re having trouble finding that site.

We can’t connect to the server at yourewardcard.com.

If you entered the right address, you can:

   Try again later
   Check your network connection
   Check that Firefox has permission to access the web (you might be connected but behind a firewall)

When I open a new tab and enter any website name I cannot connect to any site and this has only just started The message I get reads cannot connect to server at gb.search.yahoo.com

My bookmarks, history and passwords have disappeared. I looked at the articles, refreshed firefox, have restarted firefox and my computer multiple times but cannot retrieve them.

This is the message when I start firefox

The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem.

Hello,

we are observing big issues with mozilla firefox.

Few weeks ago it was impossible to use amazon with it.

Amazon support recommended us to not use the anti virus anymore, which was very strange. but it did not help.

After I add the antivirus addon to firefox it started to work. Unfortunatelly just for few weeks.

Actually we receive the following error and cannot browse or do anything Fehlercode: PR_CONNECT_RESET_ERROR

We have tried follwoing without success: - clearing cache - using problem investigation of firefox below button "help" - deinstalling and installing - installing the beta version

already after installation of firefox where normally terms and conditions to confirms shall appear we get the failure Fehlercode: PR_CONNECT_RESET_ERROR nd the content cannot be downloaded.

Hence Amazon does not work below google neighter and firefox is the only way o use amazon, we will appreciate your help.

Looking forward for your help

ags

When I try and connect to a site with firefox I get a message saying "Check that Firefox hass permission to access the web (you might be connected but behind a firewall) How can I get check to see if I am behind the firewall and if so how can I get out to connect to that specific site.

I wrote yesterday but my post doesn't appear today. Today I got the message about bookmarks and history not functioning and eventually found something in Firefox that said it was probably due to "some security software." I have now gone into Windows settings and my security updates are done, but I have no idea what I'm supposed to do now. This is an extremely annoying and disruptive issue. I see that several other people are experiencing it, so it's interesting that the note next to their posts state that no one else is having the same problem. Can someone please help us all to get our bookmarks and history back?

I got the new FF update this morning and noticed shortly after when i got back online a bd_config.cfg file popped up onto my desktop windows 10. I deleted it not thinking anything about it and when back online again and it popped up again in fact everytime i did this it popped up no matter what i did and went online.

It has something to do with BitDefender i figured out uninstalled bit defender re installed it no luck

Refreshed\Reset Firefox with no luck either.

Like many, I have Windows 10 and cannot upgrade to Windows 11 without purchasing a new computer. I don't want the upgrade as my desktop computing needs are simple -- checking email and occasional online research. I am looking at 0patch as a solution to Microsoft discontinuing support for Windows 10 and want to know if Firefox will operate compatibly with 0patch providing security patches instead of Microsoft.

I'm not a technical person, so please keep replies simple. At 80 it's tough to keep up with all the changes! Thanks.