hi mpohom, please try to [[Reset Firefox – easily fix most problems|reset firefox]] (this will keep your bookmarks and passwords) and run a full scan of your system with different security tools like the [https://www.malwarebytes.org/antimalware/ free version of malwarebytes] and [https://toolslib.net/downloads/viewdownload/1-adwcleaner/ adwcleaner].

No result https://crash-stats.mozilla.com/report/index/e3fa8cbc-0331-4f9a-b276-c6ae52160310 my system is fresh i formated my pc today also when i watch youtube i every 2-3 minutes i have An error has occurred please try again later

Product Firefox Version 45.0b10 Build ID 20160225145837 Release Channel '''beta''' OS Windows NT OS Version 6.3.9600 Signature js::AutoEnterOOMUnsafeRegion::crash | js::jit::TryAttachNativeGetValuePropStub -------------- '''[https://www.mozilla.org/en-US/plugincheck/ Use this link to check that your plugins are up-to-date.]''' If any are listed as unknown or research, do not worry about them. -------- '''[https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram Firefox uses too much memory (RAM) - How to fix]''' This article describes how to make Firefox use less memory to make it run faster and prevent crashes. '''https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster''' '''https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix''' '''https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding'''