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.

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 Stuck in Mozilla Crash Reporter Loop

  • 4 ŋuɖoɖowo
  • 2 masɔmasɔ sia le wosi
  • 5 views
  • Nuɖoɖo mlɔetɔ joel.robertson

more options

When I launch Firefox, it briefly shows the Firefox window and then crashes and shows the Mozilla Crash Reporter. Attempting to restart (safe mode or otherwise) yields the same crash result and display of the Mozilla Crash Reporter.

I have uninstalled Firefox, cleaned up the "C:\Program Files (x86)\Mozilla Firefox" and "C:\Program Files\Mozilla Firefox" directories, cleaned up my "%USERPROFILE%\AppData\*\Mozilla\Firefox" directory, and then reinstalled the latest version of Firefox, but Firefox still crashes.

Not sure how much of this is relevant, but here's some more info... Prior to this issue, i was able to successfully launch and use Firefox (v42). Recently I installed the Selenium IDE plugin, and all continued to work fine. Yesterday I attempted to use the Selenium Firefox WebDriver which automatically installs another plugin, and that's when Firefox stopped working for me.

Can someone analyze crash report bp-420d7755-3c9a-4e9b-8def-c75702160223 (https://crash-stats.mozilla.org/home/products/Firefox) to see if they can determine the cause of the issue and a solution? Thanks!

When I launch Firefox, it briefly shows the Firefox window and then crashes and shows the Mozilla Crash Reporter. Attempting to restart (safe mode or otherwise) yields the same crash result and display of the Mozilla Crash Reporter. I have uninstalled Firefox, cleaned up the "C:\Program Files (x86)\Mozilla Firefox" and "C:\Program Files\Mozilla Firefox" directories, cleaned up my "%USERPROFILE%\AppData\*\Mozilla\Firefox" directory, and then reinstalled the latest version of Firefox, but Firefox still crashes. Not sure how much of this is relevant, but here's some more info... Prior to this issue, i was able to successfully launch and use Firefox (v42). Recently I installed the Selenium IDE plugin, and all continued to work fine. Yesterday I attempted to use the Selenium Firefox WebDriver which automatically installs another plugin, and that's when Firefox stopped working for me. Can someone analyze crash report bp-420d7755-3c9a-4e9b-8def-c75702160223 (https://crash-stats.mozilla.org/home/products/Firefox) to see if they can determine the cause of the issue and a solution? Thanks!

Ŋuɖoɖo si wotia

jscher2000 said

This looks like an incompatibility with your current version of WebSense. Could you review the potential solutions in the following thread and see whether any of them work for you: I have an issue with Firefox crashing even before it starts up.

My solution turned out to be a hybrid of this solution. Instead of creating an empty file qipcap.dll in the Firefox installation directory, I copied an existing, small DLL already in that directory, lgpllibs.dll, and named the copy qipcap.dll. That allowed Firefox to start without requiring me to dismiss the DLL error dialog each time.

Xle ŋuɖoɖo sia le goya me 👍 2

All Replies (4)

more options

This looks like an incompatibility with your current version of WebSense. Could you review the potential solutions in the following thread and see whether any of them work for you: I have an issue with Firefox crashing even before it starts up.

more options

Yes, it appears to be a WebSense issue. The technique in the thread you referenced allows me to manually get into Firefox, but since I am attempting to drive Firefox with the Selenium Firefox WebDriver, it isn't going to work for me. Each time Selenium runs a test case, it attempts to launch Firefox, but if I have to manually dismiss the DLL error dialog for each of the hundreds of automated test cases, that just ain't gonna fly.

Is there a blank DLL I can download that is valid but just doesn't implement anything?

more options

I don't personally know anything about the DLL hack, I usually suggest using the ESR edition of Firefox (details in the other thread).

more options

Ɖɔɖɔɖo si wotia

jscher2000 said

This looks like an incompatibility with your current version of WebSense. Could you review the potential solutions in the following thread and see whether any of them work for you: I have an issue with Firefox crashing even before it starts up.

My solution turned out to be a hybrid of this solution. Instead of creating an empty file qipcap.dll in the Firefox installation directory, I copied an existing, small DLL already in that directory, lgpllibs.dll, and named the copy qipcap.dll. That allowed Firefox to start without requiring me to dismiss the DLL error dialog each time.