We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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.

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

Mulongo oyo etiyamaki na archive. Tuna motuna mosusu soki osengeli na lisalisi

How to solve 413 Request Entity Too Large error message?

  • 2 biyano
  • 19 eza na bankokoso oyo
  • 2 views
  • Eyano yasuka ya cor-el

more options

Within last week I can't access websites or bookmarks previously used without getting 413 error message. (Windows 10 laptop) Mozilla goes into "not responding" mode after error message.

Within last week I can't access websites or bookmarks previously used without getting 413 error message. (Windows 10 laptop) Mozilla goes into "not responding" mode after error message.

Solution eye eponami

Note that this is usually an issue with corrupted cookies that are send to the server as part of the HTTP request headers.

You can clear the cookies from the website.

You can inspect cookies and passwords and permissions for the domain in the currently selected tab via these steps:

  • click the Control Center 'i' icon at the left end of the location/address bar
  • click the arrow to expand the security message
  • click "More Information" to open "Tools -> Page Info"
  • click "Security" to inspect and modify cookies and passwords in a standalone window

If clearing cookies didn't help then It is possible that the cookies.sqlite file in the Firefox profile folder that stores the cookies got corrupted.

  • rename/remove cookies.sqlite (cookies.sqlite.old) and if present delete cookies.sqlite-shm and cookies.sqlite-wal in the Firefox profile folder in case cookies.sqlite got corrupted.

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

Tanga eyano oyo ndenge esengeli 👍 8

All Replies (2)

more options

Instructions are old way. This was a solution, nothing current yet. Try: Clear the cookies ('problematic' site(s) only): Firefox > Preferences > Privacy > Cookies: "Show Cookies" Clear the cache: Firefox > Preferences > Advanced > Network > Cache: "Clear Cache Now"

Can prob follow this : https://knowledgebase.constantcontact.com/articles/KnowledgeBase/6894-error-request-entity-too-large

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

more options

Solution eye oponami

Note that this is usually an issue with corrupted cookies that are send to the server as part of the HTTP request headers.

You can clear the cookies from the website.

You can inspect cookies and passwords and permissions for the domain in the currently selected tab via these steps:

  • click the Control Center 'i' icon at the left end of the location/address bar
  • click the arrow to expand the security message
  • click "More Information" to open "Tools -> Page Info"
  • click "Security" to inspect and modify cookies and passwords in a standalone window

If clearing cookies didn't help then It is possible that the cookies.sqlite file in the Firefox profile folder that stores the cookies got corrupted.

  • rename/remove cookies.sqlite (cookies.sqlite.old) and if present delete cookies.sqlite-shm and cookies.sqlite-wal in the Firefox profile folder in case cookies.sqlite got corrupted.

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.