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recently I started getting this pop up every time I leave gmail, even when all I've done is sent a quick note. I did not have this problem before.

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  • Last reply by McCoy

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Never had this problem in all the years of using gmail and firefox on my macbook pro, but just recently I am getting this message EVERY time I leave gmail. I go back and check, and I have completed everything, but it comes up each time anyway. Even if I just write a quick note to someone and send it, I'll get the message: This page is asking you to confirm that you want to leave - data you have entered may not be saved. What's going on?

Never had this problem in all the years of using gmail and firefox on my macbook pro, but just recently I am getting this message EVERY time I leave gmail. I go back and check, and I have completed everything, but it comes up each time anyway. Even if I just write a quick note to someone and send it, I'll get the message: This page is asking you to confirm that you want to leave - data you have entered may not be saved. What's going on?

All Replies (3)

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That sounds like a website issue. Contact its support.

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Separate Issue; Your System Details shows;

Installed Plug-ins

Shockwave Flash 19.0 r0 Shockwave Flash 32.0 r0
Having more than one version of a program may cause issues. You must remove the older programs. Then get the current full installer.

Flash: Grab the uninstaller from here: Uninstall Flash Player | Windows {web link} Uninstall Flash Player | Mac {web link}


Then reinstall the latest version.

Note: Windows users should download the active_x for Internet Explorer. and the plugin for Plugin-based browsers (like Firefox).

Note: Windows 8 and Windows 10 have built-in flash players and Adobe will cause a conflict. Install the plugin only. Not the active_x.

Flash Player Version 32.0.0171

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only>


See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

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mtesla said

This page is asking you to confirm that you want to leave - data you have entered may not be saved.

Hello mtesla,

To get rid of that message, would you try this please :

Type in the address bar about:config and press Enter (promise to be careful, if asked)

Type in the search bar dom.disable

and look for the preference dom.disable_beforeunload

Set its value to true and then close and restart Firefox.