Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, see this article.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

I keep getting this error code window and it endlessly repeats DragDropUpload exception in track ReferenceError: nsDragAndDrop is not defined

  • 1 èsì
  • 4 ní àwọn ìṣòro yìí
  • 7 views
  • Èsì tí ó kẹ́hìn lọ́wọ́ cor-el

more options

I open firefox and a dropdown window appears with this message. DragDropUpload exception in track ReferenceError: nsDragAndDrop is not defined. I ca click on canceler OK. Clicking OK causes the window to close and immediately repeat. I can quit firefox.

I open firefox and a dropdown window appears with this message. DragDropUpload exception in track ReferenceError: nsDragAndDrop is not defined. I ca click on canceler OK. Clicking OK causes the window to close and immediately repeat. I can quit firefox.

Ọ̀nà àbáyọ tí a yàn

Is this a problem with an extension (FireFTP)?

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • Do NOT click the "Refresh Firefox" button on the Safe Mode start window
Ka ìdáhùn ni ìṣètò kíkà 👍 0

All Replies (1)

more options

Ọ̀nà àbáyọ Tí a Yàn

Is this a problem with an extension (FireFTP)?

Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Appearance
  • Do NOT click the "Refresh Firefox" button on the Safe Mode start window