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

Firefox has recently started coming up by itself when I boot my computer. Why? How do I stop it? thanks

  • 13
  • 1 nwere nsogbu anwere nsogbu a
  • 985 views
  • Nzaghachi ikpeazụ nke crankygoat

more options

I have checked my startup options and this is not one. Firefox does not start "immediately"; sometimes when I have started a Firefox session quickly after booting up, a second iteration appears (on top of the one in which I am working grrrr). I believe this is related to the last Windows update. It is VERY annoying and usually counter-productive. HELP!

I have checked my startup options and this is not one. Firefox does not start "immediately"; sometimes when I have started a Firefox session quickly after booting up, a second iteration appears (on top of the one in which I am working grrrr). I believe this is related to the last Windows update. It is VERY annoying and usually counter-productive. HELP!

Asịsa ahọpụtara

I thank you all for your suggestions; none of them turned up anything. However, Microsoft ran an update (in the background, unannounced) and since then this has stopped.  ?? 8-@ sigh. Ain't Windows grand?!?

Gụọ azịza a na nghọta 👍 0

All Replies (13)

more options

You can use this tool: https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns

Have a look at the page to familiarize yourself. It should also come with a help file.

It has a lot of tabs to separate categories, but the Logon tab should cover it for you. Otherwise, you can just use the Everything tab.

You are looking for: HKLM [...] Run (or variations on Run) HKCU [...] Run (or variations on Run) and Scheduled Tasks which are set to start Firefox. If you find any entries, you can just un-tick the box next to it to disable the autostart. It can be re-enabled any time you like.

Note that if you shut down Windows with applications (like Firefox) open, sometimes Windows thinks it is a good thing to restart them at login.

more options
more options

This does not happen during a restart. Firefox starts up (by itself) only during a first boot. Neither Mozilla nor Firefox appears among the enabled startup items under the task manager.

more options

This did not solve the problem. This morning while I viewed the responses to this problem, it did it again. I believe that another process is causing this and was beginning to suspect a Microsoft game which I used for a few days and then deleted, however my husband tells me that he is having the same problem with his Google Chrome browser.

more options

When the browser starts, what is shown?

more options

A blank page (my usual).

more options

Did you check to see if the toolkit.winRegisterApplicationRestart preference is set to false, as suggested by FredMcD?

more options

No, I did not as this is not a case of Firefox coming up because it was left up when I shut down.

more options

Does this also happen if you set another browser as the default browser in case Firefox currently is the default browser ?

more options

You should check to make sure that the toolkit.winRegisterApplicationRestart preference is set to false. Disabling that feature may fix the problem if maybe Firefox or Windows is incorrectly detecting that Firefox was left open.

more options

Asịsa Ahọpụtara

I thank you all for your suggestions; none of them turned up anything. However, Microsoft ran an update (in the background, unannounced) and since then this has stopped.  ?? 8-@ sigh. Ain't Windows grand?!?

more options

Good to hear.

more options

Ha! I am glad it was fixed for you, then. Sneaky Windows. :D