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Firefox won't start, even after fresh re-install. How to mitigate that?

  • 3 תגובות
  • 1 has this problem
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  • תגובה אחרונה מאת FredMcD

ysap
ysap
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On my company Win 10 machine, I had Firefox working as a secondary browser (normally using Chrome). Recently I tried starting Firefox and it won't start. For the last two days I am trying all the methods I found to fix the problem. The symptom is after clicking on the icon, a process is created but the Firefox application it self does not run.

I tried the following:

1. Run in safe mode

2. Uninstall and re-install the application, trying both 64-bit and 32-bit installs of version 59.0.2.

3. Install w/o the maintenance module option

4. Uninstall, then clean up Firefox and Mozilla related folders under AppData and Program Files, and re-install

5. Trying on my home network and office network, both directly and through VPN.

6. Combinations of the above, and of course, killing the firefox.exe process in between attempts.

Nothing helps. All I see is the process but not the application.

Machine is Windows 10 64-bit. Other browsers used are Chrome and IE11.

How can I debug this situation?

On my company Win 10 machine, I had Firefox working as a secondary browser (normally using Chrome). Recently I tried starting Firefox and it won't start. For the last two days I am trying all the methods I found to fix the problem. The symptom is after clicking on the icon, a process is created but the Firefox application it self does not run. I tried the following: 1. Run in safe mode 2. Uninstall and re-install the application, trying both 64-bit and 32-bit installs of version 59.0.2. 3. Install w/o the maintenance module option 4. Uninstall, then clean up Firefox and Mozilla related folders under AppData and Program Files, and re-install 5. Trying on my home network and office network, both directly and through VPN. 6. Combinations of the above, and of course, killing the firefox.exe process in between attempts. Nothing helps. All I see is the process but not the application. Machine is Windows 10 64-bit. Other browsers used are Chrome and IE11. How can I debug this situation?

השתנתה ב־ על־ידי ysap

כל התגובות (3)

Shadow110
Shadow110
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Hi, you can try this : uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files , C:\Program Files(x86) & C:\ProgramData Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do :

Reinstall with Current Release Firefox 59.0.2 with a Full Version Installer

Please let us know if this solved your issue or if need further assistance.

ysap
ysap Question owner
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Thanks, Pkshadow. I believe that all the suggestions you provided were tried and are reported in me original post.

FredMcD
FredMcD
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Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}