Ondersteuningsforum voor Firefox

When I surf Youtube, Google, Facebook and anything on Firefox this following error happen every time. Please help me.

Firefox detected a potential security threat and did not continue to www.youtube.com because this website requires a secure connection.

What can you do about it?

www.youtube.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

The issue is most likely with the website, and there is nothing you can do to resolve it.

If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the website’s administrator about the problem.

I did not knowingly turn on permanent private browsing mode, but it is on and I can not find any way to turn it off. How do I turn it off? Running FF 91.0.1 on Win 10.

Hello I'm referencing the topic where TLS 1.0 and 1.1 support was removed but rolled back to accommodate some government agencies / sites and support for COVID-19 data

https://support.mozilla.org/en-US/questions/1290040#:~:text=Mozilla%20and%20other%20browser%20makers,and%20performance%20of%20Internet%20connections.

Quoted answer "Right, support for TLS 1.0 and TLS 1.1 has been removed few months ago, but we reverted the change for an undetermined amount of time to better enable access to critical government sites sharing COVID19 information."

Since it was referenced as "undermined amount of time", is there anything currently on your roadmap/release schedule in regards to removing support again? I have some cutover decisions I need to make and knowing if ESR for example will remove this support in 2 months may effect the direction of those. If you have anything to share, i'd really appreciate it.

Regards,

-Chad

defaultPref("privacy.window.maxInnerWidth", 1000); defaultPref("privacy.window.maxInnerHeight", 1000);

Instead of 1000 what is the default value Firefox uses?

I'm trying to disable some pop-up blockers but I can't even find where "tools" are.

I like to ] further comment if this is going to Firefox Support. This is the most complicated mess I've ever dealt with.

An error occurred during a connection to www.facebook.com. SSL_ERROR_DC_EXPIRED What in the world? does Facebook not keep up with its own security? or is this a Firefox thing?

First of this issue is atleast 4 years old. I found various different people having this problem. https://bugzilla.mozilla.org/show_bug.cgi?id=1432644 It should be a P5 not a P3. This official Mozilla article: https://support.mozilla.org/en-US/kb/add-trusted-websites-your-allow-list-firefox-focus Does NOT work.

I am trying to add an expection to tracking protection but there is no such option, as descriped at Bugzilla. In the adress bar i removed the tracking protection for a website. But it was NOT added to the exception list. I dont allow 3rd party cookies and auto delete cookies when closing Fox. I think that is the reason why it's not working, if this is the case it's a bug.

What i actually tried to do, using dark-theme from duckduckgo permanently. Because as right now, i must change the theme every single time i reopen Firefox. This is Bull**** honestly. Even when i add duckduckgo as an addon, it does not save the dark theme!

Since yesterday I am getting this "Did Not Connect: Potential Security Issue" error on every sites that I have tried to visit. Even on well known secured sites like https://drive.google.com is inaccessible while my Chrome and Edge is working fine. Any solution?

Hi all, I should remove the notification that always appears on firefox opening.

"this file contains a virus or malware"

I'm sure I have no more this file on my system (even scanned by my antivirus) but this message still appears every time

how can I clean up?

find attached the screenshot

many thanks!

I went to clear my recent history, but it will not do so. Then I went to Menu, Settings, Privacy and Security, Cookies and Site Data, Clear Data. No change. I tried do a Refresh installation. No change. I exported my bookmarks to my hard drive, and uninstalled Firefox. I downloaded a fresh install of Firefox, and installed it. ALL MY BOOKMARKS AND SETTINGS ARE STILL THERE!! Still won't allow me to clear History. Whatever happened, happened less than 24 hours ago, going by the websites showing in Recent History. Can you advise me?

My old computer had issues and I could't fix it, so I got a new laptop after some time. When tried to login to Firefox, I couldn't remember my account password. So I used the password reset option to reset password.

Now I don't have access to my old saved passwords which I saved in my old computer.

I have the hard disk of the old/ damaged computer, so I'm looking for a way to copy/ restore my logins/ passwords saved from the old computer hard disk to my new laptop.

Both computers are Windows 10. Any help?

Hi!

I want to dump/debug http traffic with mitm proxy: https://github.com/ganskef/LittleProxy-mitm . This proxy generates it's own root certificate which i manually imported to Firefox from about:preferences#privacy > View Certificates > Authorities > Import. I verified that cert shows up after importing it. But I get errors despite of that:

Secure Connection Failed

An error occurred during a connection to www.youtube.com. Peer’s certificate has an invalid signature.

Error code: SEC_ERROR_BAD_SIGNATURE

Is there a way to bypass it?

Hello,

I recently updated Firefox to the latest version, and in the process lost all data.

How do we backup all data, for recovery later, in case your browser update deletes everything again?

When I attempt to access several websites, I am prompted to turn off my ad blocker. As I have not added a third-party software or extension that does such, I assume it is part of Firefox proper. Search as I might, I cannot find any specific reference to such a thing in "Settings". SO...how can I temporarily disable the 'Ad Blocker' device that is part of Firefox? The 'TEMPORARY' part is important, as I do greatly value the function!

I need to be able to temporarily disable my ad blocker: I keep getting popups saying that an ad blocker has prevented me from accessing a certain site, or that it's interfering with a site's fraud protection settings. I'm running Windows 10 and Windows Security, and also MalwareBytes...but neither of them appear to contain an ad blocker. Is it Firefox?

HI!

My buddy highlighted an issue, then i re-checked myself and it is worrying to me.

To recreate (windows):

Get any (non-webistaller [not nececarry, to do it this way, but simpler to check]) firefox version (buddy got a fresh portable, i used my kinda privacy fortified one). Disconnect from the internet (plug the cable for fastest result). Make your version usable (install it) Start firefox, and open the Resource Monitor, with the network tab open expand the Network Activity portion (short alphabeticly, by name, check for F for firefox). Plug the cable in.

You soon will see FF will start looking for things, then an adress with a googleusercontet.com will pop up. Does not matter what is the Homepage's default browser, does no matters even if the Homepage is set to blank, this happens.

My best bet would be google safe browsing, but still, without any activity it is already connecting to that?

I know about the Google-FF/Mozilla relation, but this really made me think about why i still like firefox.

Firefox is not remembering the cookies and data of websites that I have saved under Exceptions. These sites are saved under Exceptions but I still have to log in every single time I access those sites, regardless of the fact that are saved to the list.

When I check the connection settings on a website (lock icon left to the address bar) and go to more information I can see how many times I have visited this website. I already deleted my entire history and all the data but I still can see how many times I have visited different websites in the past. Where is this stored and how to delete this information?

The problem is it will show suggestions in the address bar. There is a setting to to remove such suggestions but I only want to remove some results. Why doesn't this part of the "history" gets deleted?

I am using FF 97.0.1 Win 10