Product Firefox Release Channel release Version 67.0.2 Build ID 20190607204818 (2019-06-07) OS Windows 10 OS Version 10.0.17763

Mon, 17 Jun 2019 14:49:03 GMT bp-9888e555-33c8-49c5-8aac-953500190617 Signature: std::_Hash<T>::_Insert<T> | class mozilla::ipc::IProtocol*& const stdext::hash_map<T>::operator[]

SafeMode 0

Crash Reason EXCEPTION_ACCESS_VIOLATION_READ ++++++++++++++++++++++++++++++++++++++++++++ Mon, 17 Jun 2019 16:03:48 GMT bp-ff455878-7369-4488-8502-c72f60190617 Signature: mozilla::dom::ExplicitChildIterator::GetNextChild

SafeMode 0

Crash Reason EXCEPTION_ACCESS_VIOLATION_READ

This is for Sumo's Related Bugs 1423250 RESOLVED DUPLICATE Crash in nsCSSFrameConstructor::ShouldCreateItemsForChild

Bug 1423250 Crash in nsCSSFrameConstructor::ShouldCreateItemsForChild RESOLVED DUPLICATE of bug 1422931

Bug 1422931 AddressSanitizer: heap-buffer-overflow [@ mozilla::dom::ExplicitChildIterator::GetNextChild] with READ of size 8

You said it also crashes in Safe Mode? Do you have any Safe Mode crash report numbers?

Let’s do a full clean re-install;

Note: Firefox comes in three or more folders on all computers. They are;

Maintenance: (Programs Folder) <Windows Only> Firefox itself: (Programs Folder) And two folders in the profile of each user on the computer for each Firefox profile for that user.

If you remove the Firefox folder, the user profiles would not be affected.

Download Firefox For All languages And Systems {web link}

Save the file. Then Close Firefox.

Using your file browser, open the Programs Folder on your computer.

Windows: C:\Program Files C:\Program Files (x86) Note: Check Both Folders

Mac: Open the "Applications" folder. https://support.mozilla.org/en-US/kb/how-download-and-install-firefox-mac

Linux: Check your user manual. If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it. See Install Firefox on Linux; https://support.mozilla.org/en-US/kb/install-firefox-linux

If you downloaded and installed the binary package from the Firefox download page, simply remove the folder Firefox in your home directory. http://www.mozilla.org/firefox#desktop ++++++++++++++++++++++++++++ Look for, and remove any Mozilla or Firefox program folders. Do not remove the Mozilla Thunderbird folder if there is one.

Do Not remove any profile folders.

After rebooting the computer, run a registry scanner if you have one. Then run the installer. +++++++++++++++++++++++++++ If there is a problem, start your Computer in safe mode and try again.

http://encyclopedia2.thefreedictionary.com/Linux+Safe+Mode This shows how to Start all Computers in Safe Mode; Free Online Encyclopedia