Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

ค้นหาฝ่ายสนับสนุน

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.

เรียนรู้เพิ่มเติม

หัวข้อนี้ถูกเก็บถาวรแล้ว โปรดถามคำถามใหม่หากคุณต้องการความช่วยเหลือ

When I try to ad the following, this answer always comes up:oes not work. Same answer: Firefox could not install the file at https://addons.mozilla.org/en-US/firefox/downloads/latest/1865/addon-1865-latest.xpi?src=addondetail because: Unexpected install

  • 1 การตอบกลับ
  • 0 คนมีปัญหานี้
  • 11 ครั้งที่ดู
  • ตอบกลับล่าสุดโดย the-edmeister

AnonymousUser
AnonymousUser
more options

When I try to ad the following the answer is always:

Firefox could not install the file at

https://addons.mozilla.org/en-US/firefox/downloads/latest/1865/addon-1865-latest.xpi?src=addondetail

because: Unexpected installation error Review the Error Console log for more details. -203

This happened

Every time Firefox opened

When I try to ad the following the answer is always: Firefox could not install the file at https://addons.mozilla.org/en-US/firefox/downloads/latest/1865/addon-1865-latest.xpi?src=addondetail because: Unexpected installation error Review the Error Console log for more details. -203 == This happened == Every time Firefox opened

การตอบกลับทั้งหมด (1)

the-edmeister
the-edmeister
  • Moderator
more options

The answer is in the first thread you started - locking this as a duplicate. https://support.mozilla.com/en-US/forum/1/668996?