Hi, sorry to hear having issues. Do not have much on Sync You should make a backup of your Profile :

• https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
• https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

This is all I have on Sync :

• https://support.mozilla.org/en-US/kb/how-do-i-set-sync-my-computer
• https://support.mozilla.org/en-US/products/firefox/sync
• https://support.mozilla.org/en-US/kb/how-do-i-choose-what-types-information-sync-firefox
• https://support.mozilla.org/en-US/kb/firefox-sync-troubleshooting-and-tips
• https://support.mozilla.org/en-US/kb/change-primary-email-address-firefox-accounts

There is contact info in this and yes do have to create a account and wait : https://support.mozilla.org/en-US/kb/forum-response-firefox-sync-verification-email-faq

Please let us know if this solved your issue or if need further assistance.

Thank you PKshadow for your response. I do already have an up-to-date backup of my profile saved but really appreciate your advice. My specific problem does not relate to the size of the data I'm trying to sync. It is more to do with account log in. Although my credentials are correct, I am never properly logged in to my account when I enter them. The sync icon always displays "login to sync" and I'm unable to manage my account in preferences. However, my credentials are accepted and my log in name does appear in preferences window. This is not user error, it is something to do with account authorisation or SW.

Paul said

Thank you PKshadow for your response. I do already have an up-to-date backup of my profile saved but really appreciate your advice. My specific problem does not relate to the size of the data I'm trying to sync. It is more to do with account log in. Although my credentials are correct, I am never properly logged in to my account when I enter them. The sync icon always displays "login to sync" and I'm unable to manage my account in preferences. However, my credentials are accepted and my log in name does appear in preferences window. This is not user error, it is something to do with account authorization or SW.

Hi again. In the last URL there is a email address for contact as mentioned. It is to bugzilla and you would need to register then say the above as descriptively as possible and someone should get back to you.

We do not have access to anything on Sync and we do not look after that here. Just the previous URL's is about all I know about it as I do not use it.

Please let us know if this solved your issue or if need further assistance.

Thanks PKshadow, I've followed your advice and posted on Bugzilla.

Great, Could you please Mark this as Solved with the Solution that worked so others can find the answer.

You can open about:sync-log via the location bar to see if there are recent error logs available. You can upload a recent log if the log is too big to put in a reply.

• https://pastebin.mozilla.org/