Hello, Before you turn off the automatic update function of Firefox please note: '''Important:''' Turning off Firefox automatic updates is '''not recommended'''. Only the latest version of Firefox gets regular security updates and will keep you safe on the Internet. However, if you really need to turn off the automatic update of Firefox, please follow these steps: #Click the Firefox menu [[Image:Fx89menuButton]] button at the top-right corner. #Select the ''Settings'' menu item. The Settings tab will open. #In the ''General'' panel, scroll down to the '''Firefox Updates''' section. #Under '''Firefox Updates''', select ''Check for updates but let you choose to install them''. #Close the Settings tab. Your new settings will be saved. Firefox will still check whether an update is available but will offer to download and install the update. Please report back if this helped you. '''Note:''' ''Never check for updates'' was removed from update preferences in [[Find what version of Firefox you are using|Firefox version]] 63. The only way to achieve this now is through an enterprise policy, as explained in the [https://www.mozilla.org/firefox/63.0/releasenotes/ release notes]. <!-- For advanced users: refer to [https://bugzilla.mozilla.org/show_bug.cgi?id=1420514 bug 1420514], [https://support.mozilla.org/en-US/questions/1233924 this support thread] and [[Customizing Firefox Using policies.json]] for details. --> Best regards Sebastian