Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Solved

Firefox keeps crashing upon start-up

D.dH replied
D.dH

Firefox keeps crashig upon start-up. The tab stays open but it just says not responding.

I've tried deleting, and re-downloading, changing settings, changing and deleting profiles through profile manager. Troubleshoot doesn’t work and neither does refresh.

Other browsing apps work just fine, it's just firefox. I only had one add-on, which was AdGuard AdBlocker.

I hadn't done anything that I'm aware of, hadn't touched any settings and only had a max of 3 tabs open at a time.

I don't really know what else I can try anymore.

Firefox keeps crashig upon start-up. The tab stays open but it just says not responding. I've tried deleting, and re-downloading, changing settings, changing and deleting profiles through profile manager. Troubleshoot doesn’t work and neither does refresh. Other browsing apps work just fine, it's just firefox. I only had one add-on, which was AdGuard AdBlocker. I hadn't done anything that I'm aware of, hadn't touched any settings and only had a max of 3 tabs open at a time. I don't really know what else I can try anymore.
Jàng tontu lii ci fi mu bokk

Saafara yiñ Tànn

I don't know whay happened but it suddenly works again. If I have the same problem again, I'll look into it further. Still thanks for taking the time.

All Replies (3)

We're sorry to hear that your Firefox seems to be crashing when you open it. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash.

  1. On the keyboard, press [Windows] Windows Key + [R]. This should bring up a Run box that contains a text field.
  2. In that text field, type %APPDATA% and press Enter. An explorer window should open.
  3. From that explorer window, double-click on the Mozilla folder, then double-click on Firefox and then on Crash reports. Double-click on submitted.
  4. Now, you should see a list of files that contain reports. Go to View > Arrange Icons by > Modified to get the most recent files at the top of the window.
  5. Open the most recent 5 files with a text editor and copy the IDs.
  6. Paste each ID with bp- into the reply window on the forums.

Thanks in advance!

You can find more information and troubleshooting steps in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

Sorry for the late reply, but there doesn’t seem to be a submitted folder and/or file. I have an Events folder (which is empty), a glean folder and several InstallTime files, but the dates for these are before the crashing.

Saafara yiñ Tànn

I don't know whay happened but it suddenly works again. If I have the same problem again, I'll look into it further. Still thanks for taking the time.

Laajal dara

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.