Is there still a name and password and Sync key saved in the Password Manager?

You can find the sync account password and the sync (recovery) key in the password manager on computers where a sync account with a specific e-mail address has been set up.

• Firefox/Tools > Security: Passwords: "Saved Passwords" > "Show Passwords"

Look for:

• chrome://weave (Mozilla Services Password)
• chrome://weave (Mozilla Services Encryption Passphrase)

You can try to remove all services.sync lines from the prefs.js file in the Firefox profile folder and possibly delete or rename the Weave folder.

• Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)

Thanks for your reply. Unfortunately, problem is continuing. I'm posting the output of your suggestions accordingly :

1. I've no password saved by "password manager".

2. I've opened the "Profile Directory" and deleted the Weave folder and tried to sync again, but it's showing same error again. :(

Thanks.

Are you sure that you have the correct password for that account?

• https://services.mozilla.com/ Firefox Sync » Home
• https://account.services.mozilla.com/

Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Reset password link works for me this time.

Thanks for your help.