- disable all extensions
- restore to default theme
- run in safe mode
- refresh firefox
- uninstall and do a fresh install from scratch.

After forced update to Windows 10 update 1903 Firefox does not run beyond 2 minutes. Firefox suddenly exits after about 3 minutes of running - regardless of what site I visit. Even exits if the browser has only 1 tab open to blank page. I can reproduce this problem every time I start firefox - even in Safe mode. Firefox always runs for around 3 minutes. Irrespective of what other application runs/or not. I don't see any crash reports too - when this happens. Last crash report I have was from before I noticed this problem. I have tried following and still see the issue (on Firefox 72 and now on 73 too. 64bit) - disable all extensions - restore to default theme - run in safe mode - refresh firefox - uninstall and do a fresh install from scratch. Any help is greatly appreciated. I could not even run Firefox long enough to post this message. Posting via Vivaldi browser.