Visi produktai Community Forum

Dear Mozilla Team,

I am a long-time, dedicated user of Firefox. Recently, my workflow has shifted heavily toward modern, resource-intensive web applications (such as large, stateful AI chat platforms, complex dashboards, and heavy documentation tools) that handle massive amounts of text and DOM elements over extended sessions.

While Firefox’s multi-process architecture is generally robust, power users often have to resort to tweaking hidden settings in about:config (such as adjusting process counts) to prevent performance degradation, memory management friction, or sluggish re-rendering during heavy, long-running tasks.

It would be fantastic to see more accessible, user-facing performance profiles or advanced resource-management options directly in the Firefox settings—for instance, a dedicated "High-Performance" or "Power User" mode for heavy web apps. This would allow users with high-end hardware (such as 32GB+ RAM systems) to explicitly allocate more resources and processing power to specific tabs or workloads without compromising the stability of the rest of the browser.

Thank you for continuing to build such an open, customizable, and user-focused browser!

Best regards, Thomas Prigl

Please reply to this email at [redacted email from community support forum]

Hi, I’m having a problem when I turn off the screen in Windows 11 26H2. The latest version of Firefox minimises the window to a small window, even though it was in full-screen mode before the screen went to sleep.

Following a windows 11 update some weeks ago on my Windows 11 Dell XPS 15 laptop, Thunderbird failed to connect to the internet. I have tried various "fixes" using Google AI but none has provided a permanent solution. I can sometimes get it to run by repeat clicking or by restarting but this only works on a hit or miss basis so can you help find a permanent solution?

I keep getting a pop up when opening my mail that reads, "The folder on inbox (then gives my email address) could not be compacted because writing to folder failed. Verify that you have enough disk space and that you have write privileges to the file system and then try again".

I don't understand!!!

for no reason get this message , just go OK says " Cannot be compacted because another operation is occurring" see attached It also does it for other folders & the like Am I accidentally hitting a keyboard combo or button that does that? or just random?

thanks

Craig ( NZ )

I'm talking about Firefox version 156.0 (64-bit)??? So since the last Windows 10 security update Firefox just wouldn't start anymore. I had two or three automatic refreshments of Firefox but even that didn't do the trick anymore in the end. Then there was a secundary Windows 10 update and I got everything running smoothly again for two days, and now today there was a Firefox update and the whole trouble started again. Even some sites wouldn't work anymore (outlook, DeepL) or I couldn't login anymore. I'll try going back to a previous version ...

Microsoft seems to have interfered with my computer. I have been using it for 10 years using Mozilla Firefox with no problems. Now all my own documents have been frozen and I am unable to make any alterations or continuation of text. I am desperately worried. I am 83 years old and started using computers relatively late in life. I am a complete 'generational novice'. It seems as if Microsoft has had some input. Please help

After the update to version 158.0 it opens and shortly afterwards freezes. i have opened in troubleshooting mode, uninstalled the app, disabled antivirus and deleted the msf files.

Nothing solves the problem.

Hi everyone! 👋

How can I troubleshoot common issues in Mozilla Firefox, such as slow browsing, pages not loading, or extensions causing problems? What are the best steps to improve browser performance?

Any tips or solutions would be greatly appreciated. Thanks! 😊

Each time I power up my laptop I want my page to go straight to my Yahoo Mail. It does do that but it also tries to open another page that errors out. I think its because there's a 'c in the address and the file can't be found. I don't know how that filename got written into the Start Up Program and I can't find it to remove it. Please tell me like a First Grader how to remove this error message.

http://"c/Program%20Files/Mozilla%20Firefox/firefox.exe%22%20-new-window%20https://mail.yahoo.com/

It says it cannot open the page.

Thank you for any help you can offer.

[redacted email from public]

This is actually the same in Firefox, and both only since today, working fine before:

Typing Ctrl-C does nothing, Ctrl-X deletes whatever is selected, but it does not end up in the clipboard. In fact, if the clipboard contains something, it will be removed (Win-V still shows it, but it can no longer be pasted). When copying from somewhere else, pasting with Ctrl-V works.

AFAICT, no issues with any other programs.

Latest versions of FF (151.0.2) and Thunderbird (151.0.1), on Windows 10.

What could be wrong?

Thanks, Ralf

Please provide contact information (phone number).. I need to talk to a real, live human being. Your articles and references are not understandable to me. Please help me restore Thunderbird e-mail function and service. Thanks you.

(PII redacted by moderator)