hello, could you provide your latest few submitted crash reports? please enter about:crashes into the location bar, copy the latest few report ids from there starting with bp- & paste them here into a forum reply. this will give us a better understanding what may be triggering those crashes.

We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash IDs to help us learn more about your crash.

The crash report is several pages of data. We need the report numbers to see the whole report.

1. Enter about:crashes in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
2. Copy the 5 most recent Report IDs that start with bp- and then go back to your forum question and paste those IDs into the "Post a Reply" box.

Note: If a recent Report ID does not start with bp- click on it to submit the report.

(Please don't take a screenshot of your crashes, just copy and paste the IDs. The below image is just an example of what your Firefox screen should look like.)

Thank you for your help!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

Here the latest report ids bp-04ef302d-36a4-4c3e-b00a-89cbd2160427 bp-6c2653d4-38d9-411b-ada2-970b92160427 bp-d9e1fedc-d60d-4ff4-b235-780202160427 bp-e42da6f9-76f1-4843-aa13-e7e1b2160427 bp-7ef1f647-c849-4631-8f32-07bd92160427

I disabled all my 5 add-ons but that didn't help.

hi thanks - this looks like an issue with hitman pro alert - can you try if firefox is able to start up when you disable it/uninstall it for once?

Hi Phillpp,

It does indeed seem that this is the cause. I'll contact the developers of Hitman Pro.

Thanks for your help.

Erwin

thanks a lot for the follow up! i've also filed https://bugzilla.mozilla.org/show_bug.cgi?id=1268025 for this issue in case you want to point their devs to that as well...