I visited a website once, and now every time I open a tab, it tries to redirect to that website. How do I remove this "feature"?

Question

Some website called MyStart keeps trying to redirect every blank tab I open to its website. I doesn't seem to work, but I get sick of seeing it try anyway, and it worries me because I don't recall giving it permission to do this. I added the SiteBlock plugin and added the URL it's trying to redirect me to on the blacklist, and even though now my new tabs are blank the way they're supposed to be, I still see the URL in the tab heading, so whatever this thing is, its still on my computer or in my browser. But I can't find it anywhere in my add-ons and extensions and such. It's also not in my programs on my computer.

Answer 1

There have been several threads about this add-on during the past few months...
It is important to check the Windows Control Panel > Programs and Features to remove the source(s). These may include the following:
* Incredibar
* MyStart
* Web Assistant
After that, restart Firefox and start clearing out its settings as described in the following threads. Many users find it simpler to "Reset" than to take multiple steps to clean-up Firefox. That's up to you.
* [https://support.mozilla.org/en-US/questions/934213 How dangerous is the MyStart Incredibar infection? Are my stored passwords secure?]
* [https://support.mozilla.org/en-US/questions/933191 http://mystart.incredibar.com]
* [https://support.mozilla.org/en-US/questions/930367 How do I remove MyStart:Incredibar ?]