We're sorry to hear that your Firefox seems to be crashing when you open it. Please perform the following steps to give us a crash report ID that helps us find out more about the cause of the crash.

1. On the keyboard, press [Windows] The image "Windows key" does not exist. + [R]. This should bring up a Run window that contains a text field.
2. In that text field, type %APPDATA% and press Enter. An explorer window should open.
3. From that explorer window, double-click on the Mozilla folder, then double-click on Firefox and then on Crash reports. Double-click on submitted.
4. Now, you should see a list of files that contain reports. Go to View > Arrange Icons by > Modified to get the most recent files at the top of the window.
5. Open the most recent 5 files with a text editor and copy the IDs.
6. Paste each ID with bp- into the reply window on the forums.

Thanks in advance!

You can find more information and troubleshooting steps in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

bp-b3288a6e-7599-48d0-8257-1142b2160212 bp-c37ad3ca-e4ac-442f-8dc4-41f6e2160212 bp-ebb88596-f031-40d7-90de-7db6f2160212 bp-d80f2454-6424-4a0a-9275-5a2802160212 bp-30c1b24b-9258-4179-959c-408eb2160212

thanks - unfortunately this crash may be caused by websense endpoint security software that is running on a device. in case your computer is part of a managed enterprise environment, please get in contact with your it department about this issue. more information is available in bug 1181091.

in a larger enterprise using the extended support release (esr) version of firefox, which receives security updates but feature updates only once every 10 months, might also be a better option compatibility-wise: https://www.mozilla.org/en-US/firefox/organizations/faq/

The esr installed and it runs but it didn't copy over my settings from the old firefox. Is there a way to import bookmarks, homepages, settings ect..

You can copy files like these to the current Firefox profile folder to recover specific data.

• bookmark backups: JSON backups in the bookmarkbackups folder
• logins.json and key3.db (decryption key) for Passwords saved in the Password Manager
• cert8.db and possibly cert_override.txt for (intermediate) certificates stored in the Certificate Manager
• persdict.dat for words you added to the spelling checker dictionary
• sessionstore.js for open tabs and pinned tabs and tab groups

Note that is probably best to avoid copying SQLite database files because the ESR version can use a more recent SQLite version and downgrading might not work properly, so best might be to restore the bookmarks via a JSON backup in the bookmarkbackups folder. You will lose history and cookies and other data stored in an SQLite database.

• bookmarks and history: places.sqlite
• permissions.sqlite for Permissions and possibly content-prefs.sqlite for other Site Preferences
• SQLite files like cookies.sqlite (cookies) and formhistory.sqlite (saved form data)

See also:

• https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Ok great. Thanks for your help.