Hi there, I'm sorry to hear that you're experiencing tab crashes in Firefox. I'll do my best to help you troubleshoot this issue. To begin with, please try the following steps to resolve the problem: Update Firefox: Make sure you have the latest version of Firefox installed on your Windows 11 system. You can check for updates by clicking on the menu button (three horizontal lines) in the top-right corner, then selecting "Help" and "About Firefox." Disable extensions: Some extensions can cause conflicts and lead to tab crashes. Try disabling all your extensions and see if the issue persists. If not, you can enable them one by one to identify the problematic one. Clear cache and cookies: Clearing your browser's cache and cookies can often resolve various issues. To do this, go to the menu button, select "Options" or "Preferences," go to the "Privacy & Security" tab, and click on "Clear Data." Create a new profile: Occasionally, profile corruption can cause crashes. Creating a new profile can help resolve this. Open Firefox's profile manager by running the command "firefox.exe -p" in the Windows Run dialog (press Win + R). Then, create a new profile and see if the crashes still occur. If the issue persists after trying these steps, please provide more details about the crashes you're experiencing. Are they happening with specific websites or actions? Do you receive any error messages? The more information you can provide, the better we can assist you. Thank you for being a Firefox Support Forum volunteer, and I hope this helps in resolving the tab crash issue. Let me know if you have any further questions or need additional assistance. Best regards, Suram Firefox Support Forum Volunteer