This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Browser slow, have refeshed and used malware scan. Still running slow.

  • 2 பதிலளிப்புகள்
  • 2 இந்த பிரச்னைகள் உள்ளது
  • 16 views
  • Last reply by cor-el

Firefox is slow to start up and then slow to load tabs and sites. I have refreshed the browser and ran antivirus and malware scans (clean bill of health). My PC was bough new earlier this year and it runs on Windows 10. I have had the slow browser problem for around a week.

Firefox is slow to start up and then slow to load tabs and sites. I have refreshed the browser and ran antivirus and malware scans (clean bill of health). My PC was bough new earlier this year and it runs on Windows 10. I have had the slow browser problem for around a week.

All Replies (2)

You can check for problems with the places.sqlite database file (bookmarks, history) in the Firefox profile folder.

If the Places Maintenance extension can't repair the places.sqlite database file then remove all places.sqlite file(s) in the Firefox profile folder to make Firefox rebuild the places.sqlite database file from the most recent JSON backup in the bookmarkbackups folder.


Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) to see if that helps.