I've now installed Firefox several times including at least one clean install. I've worked through all the support pages on how to fix the problem, including system scan using MalwareBytes, and removing extensions, but the problem persists. To be more precise, sometimes it just crashes immediately leaving the notices shown in the image. Sometimes it opens and stays for a while but then crashes with a similar notice. Crash reports: bp-945b32f1-96b3-4233-ba19-03c310221026 26/10/2022, 12:02 bp-2af09469-4ba1-4531-8406-5e0f70221026 26/10/2022, 12:02 bp-d7d56904-ca94-4397-812d-a39260221026 26/10/2022, 09:55 bp-7e88f783-318e-4401-b825-89a810221024 24/10/2022, 18:50 Hope someone can help.