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I'm a decades long time Firefox user, and I always keep Firefox updated automatically to whatever is the current version. I've never had any substantial issues with Firefox in the past, but recently I've encountered some rather drastic issues.

Background: I'm ex-IT, so I tend to be ultra-conscientious about security and performance updates all across my system. I'm also highly alert for any signs that my system or apps might be compromised in any way.

Recently, I started noticing that I was unable to scroll with my keypad or keyboard on certain sub-windows and certain pop-ups in some web sites (not all). I could scroll these sub-windows/pop-ups only by touch screen, and until today that has always worked. I've been using this workaround, because I haven't had time to really look into the issue. Most sites worked fine, but many would not.

Today, however, I logged into what I know to be a legitimate web site, https://blueshieldca.com, for some important information, but this time I found I was unable to scroll ANYthing on the site using my keypad, keyboard, or touch screen. I could change pages through the on-site menus, but couldn't navigate further at all on any page. I can see that there is more information cut off at the bottom of the page, but I simply can't scroll the page to view it. I almost never use MS Edge browser, but I tried it today, and I'm not having the same problem using Edge.

I'm also having a slightly different, but similar (related?), Firefox issue with the typical cookie-settings-preferences prompts that appear initially on most web sites. Any time I try to arrow over the cookie prompts, they immediately disappear. I'm completely unable to accept, change, or set cookie preferences on any sites.

I've reviewed all my settings in Firefox and all the add-ons I use. In Firefox itself, I run the following extensions: Brave (default search), DuckDuckGo Privacy Essentials, Ghostery Private Search for Firefox, Malwarebytes Browser Guard, Privacy Badger, and Express VPN (disabled) - I do not run any browser-specific VPN, but I always use Nord VPN on my system. The configuration options are overwhelming, and in spite of investigating every avenue I can think of, I haven't been able to find either a cause or a fix. I'm sure hoping you guys can help me figure this out!

My system is Windows 11 Home (25H2), 64-Bit, on a DELL XPS 13, 32GB RAM, 1TB SSD drive (1/3 free), about 3 years old. In addition to the browser-specific security software mentioned above, I run Bitdefender Security. I haven't made any changes or specific updates to any apps that I can link to the inception of this problem.

Any ideas will be greatly appreciated!

Bei manchen PDF Dateien 2,7 MB bekomme ich die Fehlermeldung Datei beschädigt. im Originalpostfach ( t- online ) Zugang über Internet ist der Anhang ok. Wenn ich die Datei vom Server direkt ( z.B. t-online nochmals an meine E- Mail Adresse sende und dann über mein Thunderbirth Mailprogramm öffne, ist die Datei ok. Der selbe Effekt tritt auch auf meinem Lapptop mit Linux Betriebssystem auf. Was kann die Ursache sein?

Unable to open NEW Email on one click. i need to wait for 4-5 mins to open that email. even i am not able to open on one click which contains Barcode. which email contain barcode its also not reflecting in email and even i need to wait for 4-5 mins to open that email.

Kindly help me for this matter i need to change any settings.

Firstly, both laptops are working well. While one is still behaving quite normal, I am unable to install Mozilla Thunderbird on the other after having done a reset .. The "HUB" will NOT except my personal details i.e. email address & PW which I've used for years. I'll leave it at that for now ..

I've recently switched to Firefox but am finding some of the performance a bit cumbersome. I am continually being asked to hit "Send" ["To display this page, Firefox must send information ..."] when I am logging into my Outlook email or looking at my bank information. I'd rather not be "resending" these pages each time and am wondering if there is a setting.

Edition Windows 11 Pro Version 25H2 Installed on 2025-12-10 OS build 26200.8246 Serial number YX0J28CC Experience Windows Feature Experience Pack 1000.26100.297.0

Thanks, Nancy

I have just set up Thunderbird on a new Windows 11 PC. So far as I can tell I have filled in the server details correctly. I can receive incoming mail. However, it fails to send emails out - I have tried a couple which I know are correct. Error message is: Sending of the message failed. An error occurred while sending mail. The mail server responded: <<snip>>: Relay access denied.

Please check the message recipient "<snip>" and try again.

(I've removed the actual mail address from the error message.) I've read the answers to previous versions of this query and made the correction as suggested. This hasn't helped. Any suggestions please? Many thanks, Roger Moore

I have placed a question, did not get any response and can't even find my questiomn. Cost me masses of time to scrol throughj the forum

How can I find my questiomns

First I am very frustrated that someone decided to change the default to show all messages in threads. How do I globally disable this for every profile on my system. Additionally how do I disable it in one pass for all top level folders at the moment I have to change one top level folder at a time on every system I use thunderbird on, as I have over 100 folders this is very inconvenient. How do I modify a new thunderbird installation so all users and profiles default to threads being turned off.

I'm getting "Thunderbird can't connect to the server" message, so I can't download messages. However, a message or two will finally download 1-2 hours later.

Same problem on 2 laptops, both running Windows 11. But I know my emails are coming in as I can view them via Spectrum webmail. So the problem isn't the Spectrum servers.

I've logged out and back into Thunderbird, and have re-booted my laptops. No luck. What to do?

Also, is there a place to report problems directly to Thunderbird?

Thanks for any help.

Went to VRBO website to look at a reservation and the website, which showed me as signed in, showed nothing of the reservation. Said I had no reservation,, no history of saved searches. When I used Microsoft Edge, all my previous reservations, searches etc. were accessible. I cleared my Firefox cookies, etc. still had the same problem