Product Firefox Release Channel release Version 91.0.1 Build ID 20210816143654 (2021-08-16) Buildhub data OS Windows 10 OS Version 10.0.19043

bp-6a3fef1f-ca8a-4c75-bfe2-58d470210822 Signature: AsyncShutdownTimeout | profile-change-teardown | Extension shutdown: addons-search-detection@mozilla.com,Extension shutdown: reset-search-defaults@mozilla.com

Uptime 97 seconds (1 minute and 37 seconds)

MOZ_CRASH Reason (Sanitized) : MOZ_CRASH()

Crash Reason EXCEPTION_BREAKPOINT

It’s possible that there is a problem with the file(s) that store the extensions registry.

Type about:support in the address bar and press enter.

Under the page logo on the left side, you will see Application Basics. Under this find Profile Folder. To its right press the button Show Folder. This will open your file browser to the current Firefox profile. Now Close Firefox.

Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder

Linux: Under the page logo on the left side, you will see Application Basics. Under this find Profile Directory. To its right press the button Open Directory.

Delete all extensions* files and compatibility.ini in the Firefox profile folder to reset the extensions registry.

• https://support.mozilla.org/kb/Profiles

New files will be created when required.

After, restart Firefox.

See "Corrupt extension files"

• http://kb.mozillazine.org/Unable_to_install_themes_or_extensions

• https://support.mozilla.org/kb/Unable+to+install+add-ons

+++++++++++++++++++++++++++ You will have to approve the updating one last time.

Thank you for your reply. As noted above, i tried but doesn't work at all.

As noted above, i tried but doesn't work at all.

Where? Did you post another question somewhere else?

Use these links to create a new profile. Use this new profile as is. Is the problem still there?

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Type about:profiles<enter> in the address bar.

I created a new profile and restart it. But the problem comes up again. When open new tab it is completely blank. Even if I put the Youtube address in the address bar and enter press it never jumps to the Youtube site. I send you some of the images.

You can check for issues caused by a corrupted or incomplete Visual C++ installation that is missing runtime components (Redistributable Packages) required by Firefox, especially VCRUNTIME140_1.dll.

Install both 32-bit and 64-bit "Visual Studio 2015, 2017 and 2019" downloads, (x86: vc_redist.x86.exe and x64: vc_redist.x64.exe) from https://support.microsoft.com/help/2977003/the-latest-supported-visual-c-downloads

Thank you for all your kindness. It's cleared up.

Glad to help. Safe Surfing.