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.

ค้นหาฝ่ายสนับสนุน

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.

เรียนรู้เพิ่มเติม

Where is the compatibilty view selection in Firefox. It is not in Tools like IE.

  • 1 การตอบกลับ
  • 1 คนมีปัญหานี้
  • 2 ครั้งที่ดู
  • ตอบกลับล่าสุดโดย cor-el

more options

When I try to use a feature of my website that sends email it does not display the WYSIWYG. To do this on IE I selected compatibility in the Tools menu.

When I try to use a feature of my website that sends email it does not display the WYSIWYG. To do this on IE I selected compatibility in the Tools menu.

การตอบกลับทั้งหมด (1)

more options

Firefox doesn't have such a compatibility mode


Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).