Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Firefox slow after Creator's Update installed to Windows 10

  • 1 reply
  • 3 have this problem
  • 1 view
  • Last reply by cor-el

CBHedricks
CBHedricks
more options

Firefox takes 20 seconds to open - compared to 3 seconds for Chrome, IE and Edge browsers. I have check firewall, AV and power settings and they have no impact on problem. All three of my computers (different hardware) using Firefox on Windows 10 are having this same issue.

OS - Windows 10 with Creator's Update applied, Firefox updated to latest and using AVAST Free (settings checked). Computers are AMD FX 8350 with 16gb ram, Intel i7 Quad, 8gb ram and AMD A6 3.2ghz with 4gb ram.

Please advise.

CB Hedricks

Firefox takes 20 seconds to open - compared to 3 seconds for Chrome, IE and Edge browsers. I have check firewall, AV and power settings and they have no impact on problem. All three of my computers (different hardware) using Firefox on Windows 10 are having this same issue. OS - Windows 10 with Creator's Update applied, Firefox updated to latest and using AVAST Free (settings checked). Computers are AMD FX 8350 with 16gb ram, Intel i7 Quad, 8gb ram and AMD A6 3.2ghz with 4gb ram. Please advise. CB Hedricks

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Try to start Firefox in Safe Mode to see if that has effect.

  • Windows: hold down the Shift key while starting Firefox
  • Mac: hold down the Options key while starting Firefox

Boot the computer in Windows Safe mode with network support to see if that has effect in case security software is causing problems.

Create a new profile to test if your current profile is causing the problem.

See "Creating a profile":

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.