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I get istart123... I don't want this!

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When I click on + (to open another tab) I get "istart123"... used to get a selection of often used websites. How do I get rid of istart?

When I click on + (to open another tab) I get "istart123"... used to get a selection of often used websites. How do I get rid of istart?

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You can open the about:config page via the location/address bar and search for prefs that refer to istart123. You can reset user set (bold) prefs via the right-click context menu to the default value.

You can check for recently installed suspicious or unknown extensions.

If you do not keep changes after a restart or otherwise have problems with preferences, see: