Diễn đàn hỗ trợ Firefox

FireFox has been very slow and "sticky" when accessing some sites. I have Windows 11 installed on a Dell XPS8930 desktop. Other browsers (Brave and Edge) do not have this same problem. The problem most often shows up with FOX NEWS.com. Is there an issue with FireFox and FOX News?

for some weeks now, Firefox (latest, in Windows) crashes, or says 'not closed properly' and shows (usually) 12 'instances' in Task Manager when only one tab has been opened. I'm not techie, and need clear advice. Can anyone help please? Hugh, UK

After an update on F***fox meant I could not access my emails or radio programmes, etc, etc, I reverted F***fox and refused to update it daily. Now it has updated itself and I have lost all my bookmarks, hundreds of them. WTH have you criminals done?

Instead of syncing my current settings, sync just overwrote them with an old, outdated copy from another device, completely ruining my addons, bookmarks and various other settings. I managed to restore the bookmarks, but is there really no proper way to undo this or prevent such thing from happening in the first place? Is there no way to control if I want to sync my setting TO the server or FROM the server? How such a vital decision is even made then and why wouldn't there be a way for a user to control that? This is so disappointing :(

Tabs are not restoring after session closed. I have tried the profile suggestion. I verified my settings say open tabs from last session. Rebooted. Cleared cache then opened tabs then closed and it keeps only opening one tab. It crashed last night with tabs on it and this was the results once I brought it back up.

Hello, I run a movie and drama-related website: https://tvmon.com.co/. Recently, I’ve noticed that Firefox occasionally throws the following error when trying to access the site:

"Secure Connection Failed An error occurred during a connection to tvmon.com.co. . The OCSP response contains an invalid signing certificate. Error code: SEC_ERROR_OCSP_INVALID_SIGNING_CERT"

This issue is very strange because:

1. The site loads fine in Chrome, Edge, and Safari.

1. My SSL/TLS certificate is valid, up-to-date, and passes external tests (SSL Labs, etc.).

1. The error only appears occasionally in Firefox, refreshing sometimes fixes it, sometimes not.

1. Hosting and server logs show no issues at all.

I suspect this is related to Firefox’s stricter OCSP validation, but I’m not sure how to debug or resolve it. Since my site streams drama and movie content, this error is frustrating for users who rely on Firefox.

Has anyone else experienced this intermittent OCSP signing certificate error? Is there a known fix or workaround for Firefox-specific validation issues?

My browser has been acting off lately, it takes a longer amount of time than usual to even open gmail. Sometimes, it just fails to connect to a server and keeps loading forever and just stops (including gmail).

Literally every single extensions I try to download says Installation aborted because the add-on appears to be corrupt. I don't know why because I just downloaded firefox.

In FF desktop, Settings > Privacy & Security > Enhanced Tracking Protection > Manage Exceptions, my list of exceptions are being cleared/deleted/wiped. Why? I have Facebook.net and Facebook.com saved as Exceptions and they keep being wiped/cleared/deleted. Could you tell me why?

Also cookies exceptions are cleared after an upgrade, not cool.

Thank You for you assistance and support.