Hi, the latest version of Firefox is 39.0 and your Shockwave Flash needs updating.

This may also help - Troubleshoot Firefox crashes (closing or quitting unexpectedly).

If your question is resolved by this or another answer, please take a minute to let us know. Thank you.

I tried with 39.0 and Shockwave Flash 18.0.0.209, but still the crush reporter is shown always when starting Firefox and/or exiting firefox.

Is there any way I can ask a support to fix the crashing problem?

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.

Thank you for your help, but as decribed at the first, my Firefox environment is restricted to connect external sites. So that, the crush reports cannot be sent.

Is it possible if I attach the crush report to this forum, I can get some support?