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

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

This thread was archived. Please ask a new question if you need help.

Getting sync error 413 request too large

  • 2 replies
  • 1 has this problem
  • 5 views
  • Last reply by George

George
George
more options

I get the error, "Sync encountered an error while syncing: Unknown error." The error log shows this message:

POST fail 413 https://sync-269-us-west-2.sync.services.mozilla.com/1.5/32341439/storage/history

I get the error, "Sync encountered an error while syncing: Unknown error." The error log shows this message: POST fail 413 https://sync-269-us-west-2.sync.services.mozilla.com/1.5/32341439/storage/history

All Replies (2)

philipp
philipp
  • Moderator
more options

hi, this is an issue with synchronising your history. it's likely that you have a single entry there with a humongous url. maybe you're able to find this entry in your history and to delete it selectively in order to get sync working again. other alternatives would be clearing the whole browsing history or if you don't depend on it to exempt it from getting synced in the firefox menu > options > sync panel.

George
George Question owner
more options

Thanks for your help! I found 223 very long URLs from a particular web site (HealthNet.com) in my history. Each was between 28k and 29k in length. I deleted them and sync now works. I plan to report this as a bug, since Firefox history sync should accept any URL that Firefox itself can use.