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1. Enter about:crashes in the Firefox address bar and press Enter. A list of Submitted (and Unsubmitted, if any) Crash Reports will appear, similar to the one shown below.
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More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

Hello,

Thanks for the reply and apologies for the delay. Please find all recent crash reports below, these are all related to the same issue. I've worked on it a bit more in the meantime, crashes still occur when attempting to use Picture-in-Picture mode. A crash did not occur when opening a new tab with YouTube still playing after refreshing Firefox.

bp-85c10bfc-f2f3-444f-8f2c-a54340260506 06/05/2026, 14:51 bp-0df26845-d62f-4212-8305-c43ce0260505 05/05/2026, 16:11 bp-865518d7-7bbb-410e-a0a8-cdd2e0260505 05/05/2026, 16:05 bp-188b0dc8-dda3-4a3c-afeb-765400260508 08/05/2026, 09:57 bp-1c78e1e7-e9ad-4346-a907-713030260508 08/05/2026, 09:57 bp-0b208d95-d28d-4356-ac34-cce190260508 08/05/2026, 09:57 bp-9b9bae27-b8e5-4684-ad6a-940a70260508 08/05/2026, 09:57 bp-c1fca549-49af-46de-a0dd-fe8fb0260508 08/05/2026, 09:57

ESET Security is crashing Firefox here.

Hi Ty,

No, it isn't. ESET has been installed on my device for a long time, this issue is brand new this week. I also just tested this by disabling ESET and the crashes still occurred. I have another device with both ESET and FireFox installed on it, this crash is not happening on that device.

bp-57d1c8c8-d901-48c4-82c5-8e8eb0260508 08/05/2026, 10:38 bp-81db6def-b8ed-4141-bbd7-b04590260508 08/05/2026, 10:38 bp-d700430b-0b1c-44fc-8980-df5670260508 08/05/2026, 10:38

With regards to my previous reply, I can see there is a difference in FireFox versions.

The one crashing is 150.0.2.

The one behaving normally is 150.0.1.

Thanks, Liberty

This is what I see in the crash report. eOppBrowser.dll is crashing Firefox (it's ESET). As a test, try to disable "Safe Banking & Browsing" and "Browser Privacy & Security" in ESET, then restart a computer.

Hi Ty,

Thanks for your help on this. You're right, I'm wrong. Disabling those aspects of ESET did solve the problem. I'm doing a fresh installation of FireFox and ESET now to see if that resolves it completely.

Thanks, Liberty