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When I try to login, it says unknown account and ask me to create a new account. [URGENT]

Posted

I just created a new sync account on my desktop, but when I logged on my laptop, the prompt asks me to create a new account. I am sure that my user name and password are right. Both devices have Firefox 51.0.1 Laptop is Windows 10 and desktop is Windows 7.

I had this problem since last year, but only recently did I urgently need to since my bookmarks and passwords.

Thanks

I just created a new sync account on my desktop, but when I logged on my laptop, the prompt asks me to create a new account. I am sure that my user name and password are right. Both devices have Firefox 51.0.1 Laptop is Windows 10 and desktop is Windows 7. I had this problem since last year, but only recently did I urgently need to since my bookmarks and passwords. Thanks

Additional System Details

Installed Plug-ins

  • 360MMPlugin
  • 360安全卫士 快速登录
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.19
  • CFCA SecEditCtl 1.0 for Firefox, Chrome, Safari and Opera
  • Citrix Receiver Plugin (Win32)
  • Citrix URL-Redirection Helper Plugin
  • Google Update
  • Intel web components updater - Installs and updates the Intel web components
  • Intel web components for Intel® Identity Protection Technology
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Next Generation Java Plug-in 11.111.2 for Mozilla browsers
  • Shockwave Flash 24.0 r0
  • QQ QuickLogin Helper
  • VLC media player Web Plugin
  • Plugin for Wacom tablets.
  • Xunlei scriptability Plugin
  • Xunlei User scriptability Plugin,version= 2.0.2.3
  • Zoom launcher - 3.0.1
  • npABCsafeinputapp

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0

More Information

Question owner

Snap shot of the problem

Snap shot of the problem
FredMcD
  • Top 10 Contributor
4269 solutions 59856 answers

I called for more help.

Never post any personal information because an adware robot could find it, and start sending you all kinds of spam. This includes e-mail, phone, and home information.

I called for more help. '''Never''' post any personal information because an adware robot could find it, and start sending you all kinds of spam. This includes e-mail, phone, and home information.
cor-el
  • Top 10 Contributor
  • Moderator
17574 solutions 158974 answers
Can you login to the account here? *https://accounts.firefox.com/signin *https://accounts.firefox.com/settings

Question owner

@cor-el, yes I can login to the above links on my desktop, but the same problem appears when I try to login from my desktop

@cor-el, yes I can login to the above links on my desktop, but the same problem appears when I try to login from my desktop