Getting rid of the ASK Toolbar?

[stockhausen]

I am trying to get rid of the ASK Toolbar on someone's laptop. Every time I try to uninstall it I end up with a message reading:

"Error 1136. The specified account already exists"​

Can anyone explain this bizarre message and offer suggestions as to how I can remove this wretched thing?

I got involved because the laptop is running Windows Vista and Chrome had started displaying a message telling the user that Chrome would no longer be updated for Vista. I don't use Chrome and have put Firefox v48.0.2 on in its place. I gather that the latest version of Firefox will not run on XP or Vista either.

 

[stockhausen]

I eventually managed to crack this with the aid of a whole host of free anti-Virus, anti-Malware & anti-Spyware software - AVG, MalwareBytes, SuperAntiSpyware, AdAware, Avast, etc., etc., etc. I'm not sure which tool actually got rid of the ASK toolbar.

 

[stockhausen]

Firefox 49.0.1 does work on windows XP so it will work on vista.

It works on XP? I was under the impression that that it didn't.