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How to remove faststart123 from firefox browser

  • 2 (ردّان اثنان)
  • 1 has this problem
  • 7 views
  • آخر ردّ كتبه MarcvonAmsberg

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unable to uninstall using windows7->control panel->uninstall/change in firefox unable to delete using help->troubleshooting information->reset firefox in firefox unable to delete using safe mode/disable add-ons in firefox unable to delete using firefox shortcut->properties->target (deleted text appended to firefox...)

unable to uninstall using windows7->control panel->uninstall/change in firefox unable to delete using help->troubleshooting information->reset firefox in firefox unable to delete using safe mode/disable add-ons in firefox unable to delete using firefox shortcut->properties->target (deleted text appended to firefox...)

الحل المُختار

What do you mean with the 'unable' in your above post?

Do these not apply or can't you use them at all?

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test.

If there are problem with the desktop shortcut then make sure that the shortcut isn't set to read-only.


Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.

If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.

  • Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.

If you keep having problems then also create a new profile.



Do a malware check with several malware scanning programs on the Windows computer. Please scan with all programs because each program detects different malware. All these programs have free versions.

Make sure that you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also:

Read this answer in context 👍 1

All Replies (2)

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الحل المُختار

What do you mean with the 'unable' in your above post?

Do these not apply or can't you use them at all?

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test.

If there are problem with the desktop shortcut then make sure that the shortcut isn't set to read-only.


Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.

If possible uninstall your current Firefox version to cleanup the Windows registry and settings in security software.

  • Do NOT remove "personal data" when you uninstall your current Firefox version, because this will remove all profile folders and you lose personal data like bookmarks and passwords including data in profiles created by other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

  • (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
  • (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"

Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.

If you keep having problems then also create a new profile.



Do a malware check with several malware scanning programs on the Windows computer. Please scan with all programs because each program detects different malware. All these programs have free versions.

Make sure that you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also:

Modified by cor-el

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Installing malwarebytes detected items seemingly unrelated to faststart123, at least none of the filenames or extensions looked related to faststart. Regardless all were quarantined. After installation, firefox was restarted, and faststart123 was still the 1st tab in the browser

Installing AdwCleaner, after a system restart, faststart123 was removed from any browser tabs on firefox startup.

Thanks very much!