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I have a blue border around boxes in firefox (even on the Ask This box here) How do I fix this?

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I get a blue border around boxes in firefox this is in this box I am writing in or even when I type what I want to see in Youtube,how do I get rid of this and why is it there?

I get a blue border around boxes in firefox this is in this box I am writing in or even when I type what I want to see in Youtube,how do I get rid of this and why is it there?

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-> Tap ALT key or press F10 to show the Menu Bar

-> go to Help Menu -> select Restart with Add-ons Disabled

Firefox will close then it will open up with just basic Firefox. Now do this:

-> Update ALL your Firefox Plug-ins https://www.mozilla.com/en-US/plugincheck/

-> go to View Menu -> Toolbars -> unselect All Unwanted/Incompatible Toolbars

-> go to Tools Menu -> Clear Recent History -> Time range to clear: select "EVERYTHING" -> click Details (small arrow) button -> place Checkmarks on Cookies, Cache -> click Clear Now

-> go to Tools Menu -> Options -> Content -> place Checkmarks on:

1) Block Pop-up windows 2) Load images automatically 3) Enable JavaScript

-> go to Tools Menu -> Options -> Security -> place Checkmarks on:

1) Warn me when sites try to install add-ons 2) Block reported attack sites 3) Block reported web forgeries 4) Remember Passwords for sites

-> go to Tools Menu -> Options -> Advanced -> Network -> Offline Storage (Cache): click Clear Now button

-> Click OK on Options window

-> click the Favicon on SearchBar -> click Manage Search Engines -> select all Unwanted Search Engines and click Remove -> click OK

-> go to Tools Menu -> Add-ons -> Extensions section -> REMOVE All Unwanted/Suspicious/Incompatible Extensions (Add-ons) -> Restart Firefox

-> go to Tools Menu -> Add-ons -> Appearance section -> REMOVE All Unwanted/Suspicious/Incompatible Themes (Persona) -> Restart Firefox

You can enable your Known & Trustworthy Add-ons and Themes later. Check and tell if its working.

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You may have switched on caret browsing.

You can press press F7 (on Mac: fn + F7) to toggle caret browsing on/off.

  • Tools > Options > Advanced : General: Accessibility: [ ] "Always use the cursor keys to navigate within pages"

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After going nuts with the same problem, cor-el's answer gave me the hint I needed. Somehow the "High Contrast" accessibility option was turned on. Unchecking the box in Control Panel / Accessibility Options / Display gave me normal buttons again in both Firefox and Internet Explorer