Separate Security Issue: Update your Flash Player or remove it using these links; http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html Uninstall Flash Player | Windows http://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html Uninstall Flash Player | Mac

Note: Windows users should download the ActiveX 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 ActiveX.

Flash Player Version: Version 31.0.0.153

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

https://support.mozilla.org/en-US/kb/how-to-set-the-home-page

The presence of ACER in the URL would suggest that this is a customization from your computer branded by Acer, so maybe take this up to Acer support.

Did you at least check the target field in the Firefox desktop shortcut to make sure it doesn't include this URL?

You can also check the about:policies page to see whether policies are active (Options/Preferences -> Home should show this as well).

You can open "about:" pages via the location/address bar

• "about:" is a protocol to access special pages

cor-el said

The presence of ACER in the URL would suggest that this is a customization from your computer branded by Acer, so maybe take this up to Acer support. Did you at least check the target field in the Firefox desktop shortcut to make sure it doesn't include this URL? You can also check the about:policies page to see whether policies are active (Options/Preferences -> Home should show this as well). You can open "about:" pages via the location/address bar

• "about:" is a protocol to access special pages

It was never an issue before I refreshed Firefox. I was able to override the settings by going to about:config and changing the value for browser.startup.homepage

What is the current setting of browser.startup.homepage?

You can try to modify browser.startup.page directly on the about:config page.

• 0 = blank, 1 = home (browser.startup.homepage), 2 = last visited page, 3 = resume previous browser session